Annotation of loncom/html/adm/help/tex/Slot_Use.tex, revision 1.1.2.5
1.1.2.5 ! raeburn 1: \label{Slot_Use}\index{slots}\index{reservations}
1.1 raeburn 2:
3: If you wish to restrict access to content in a course to particular IP address(es)
4: and/or dates, one way to do that would be to use the ``Client IP/Name Access Control'' parameter
5: to control access by IP address, and the parameters: Problem Opening Date/Problem Due Date
6: (for problems), and Content Open Date/Content Close Date (for other types of content) to
7: control access by date.
8:
1.1.2.2 raeburn 9: LON-CAPA also provides a separate mechanism to restrict access to assessment item(s),
10: i.e., resource(s) with a file extension of .problem or .Task, which can be useful in the
1.1.2.1 raeburn 11: case where students will reserve access in advance to content at a particular time and/or place.
1.1 raeburn 12:
13: One example would be a laboratory which has limited seating, and which is offered multiple
14: times over a given time period, but for which students should only be able to reserve access
15: for one particular opportunity. To support that type of scenario, slots would be used.
16:
17: Slots can also provide access control in which a proctor either directly, or remotely, must
18: enter a pre-determined proctor username and passphrase to check-in a student into a slot.
19: Prior to check-in, the proctor can validate that the student who will receive access to
20: content protected by a slot is the actual owner of the username for whom access is
21: being granted.
22:
23: One example would be an online exam in a testing center, in which a proctor would type in
24: the proctor username and passphrase into the proctor validation screen after verification of
25: the student's official photo ID. Another example would be an online exam in which a remote
26: proctor would temporarily take control of the user's keyboard and enter the proctor username
27: and passphrase remotely into the user's web browser.
28:
29: Lastly, slots can also be used as a reservation system, e.g., for office hours, where there
30: is no need for a student to actually submit anything to the assessment item for which access
31: is controlled by slots, but the time/date of the reservation itself made by a student to
1.1.2.2 raeburn 32: gain access is of value.\\\\
1.1 raeburn 33:
34: \textbf{Course Coordinator View}
35:
36: There are two parts to the process of using slots to control access to assessment items.
37: \begin{enumerate}
38:
39: \item An instructor will create the slot using the Slot Management utility
40: \item An instructor will assign use of slots to particular resource(s) in the course using
41: the Parameter Manager to set the ``Use slot based access controls'' (useslots) parameter
42: to one of the three ``Yes'' options.
43:
44: \end{enumerate}
45:
46: The slot management utility can also be used to modify slot settings after a slot has been
47: created. Slots can be created in two ways:
48:
49: \begin{itemize}
50:
51: \item Interactively, by using the multi-page slot ``helper'' web form which prompts for the
52: choices to be made when configuring a slot.
53:
54: \item By creating a comma-separated-value (CSV) file containing slot attributes and uploading
1.1.2.3 raeburn 55: the file using the Slot Management utility, see ``Uploading Slot Attributes File'' section (\ref{Slot_CommaDelimited}).
1.1 raeburn 56:
57: \end{itemize}
58:
59: \begin{figure}
60: \begin{center}\includegraphics[width=0.70\paperwidth]{slots_creation}\end{center}
61: \caption{Slot Creation Buttons}
62: \end{figure}
63:
64: In both cases an instructor will use the multi-page slot ``helper'' web form should modifications
65: be needed to the configuration of a slot after it has been created.
66:
67: As Course Coordinator use Settings $>$ Slots to access the Slot Management Utility.
68:
69: \begin{figure}
70: \begin{center}\includegraphics[width=0.70\paperwidth]{slots_manager}\end{center}
71: \caption{Slot Management Utility}
72: \end{figure}
73:
74: Slots are of two types:
75: \begin{enumerate}
76:
77: \item instructor-assigned
78: \item student-schedulable
79:
80: \end{enumerate}
81:
82: In the case of an instructor-assigned slot, after a slot has been created, and the
83: ``Use slot based access controls'' (useslots) parameter has been set to yes, the name
84: of the slot needs to be included in the value set for the ``Slots of availability'' (available)
85: parameter. That parameter can contain multiple : separated slot names, if multiple
86: instructor-assigned opportunities are to be provided to students to access a particular
87: resource or folder.
88:
89: \begin{figure}
90: \begin{center}\includegraphics[width=0.70\paperwidth]{slots_instructor_assigned}\end{center}
91: \caption{Parameter setting for instructor-assigned slot}
92: \end{figure}
93:
94: In the case of a student-schedulable slot, there is no need to set any parameter besides the
95: ``Use slot based access controls'' (useslots) parameter.
96:
97: \begin{figure}
98: \begin{center}\includegraphics[width=0.70\paperwidth]{slots_params}\end{center}
99: \caption{Parameter setting for student-schedulable slot}
100: \end{figure}
101:
1.1.2.2 raeburn 102: Although a Course Coordinator can use either Settings $>$ Content Settings $>$ Edit Resource
103: Parameters - Table Mode or Settings $>$ Content Settings $>$ Modify Resource Parameters -
104: Overview Mode to display values set for specific users for ``Slots of availability selected
105: by student'' (availablestudent), the preferred method is to use the Slot Management Utility.
106: The utility provides the ability to view a list of students who have reserved a slot, and
107: also to remove some or all of the reservations, as needed.
1.1 raeburn 108:
109: For student-schedulable slots, each slot includes a History link below the Edit link in the
110: leftmost column of the table of slots. The History link provides access to information about
111: reservations changes for the slot, including who made the change, and in what context.
112:
113: \begin{figure}
114: \begin{center}\includegraphics[width=0.70\paperwidth]{slots_summary_cc}\end{center}
115: \caption{Reservation listing for student-schedulable slots}
116: \end{figure}
117:
118: The expectation for student-schedulable slots is that each student will use the `Reservations'
119: item included in the inline menu in a course with one or more such slots, in order to add,
120: change or drop reservations for resources which are using them.
121:
122: In the case of a student-schedulable slot, the slot will only be selectable by the student
123: for use for any resources which require a slot (i.e., for which the value in effect for
124: the useslots parameter is yes), if all of the following are true:
125:
126: \begin{itemize}
127:
128: \item The resource is open, i.e., between open date and due date (if set).
129: \item The slot start date is in the future.
130: \item Any conditions on slot use based on resource, and/or section, and/or specific users are
131: met.
132:
133: \end{itemize}
134:
135: Further constraints on whether a particular student-schedulable slot will be selectable by
136: a student are available by setting one or more of:
137:
138: \begin{enumerate}
139:
140: \item Period of time when this slot can only be uniquely chosen
141: \item Time students can start reserving
142: \item Time students can no longer reserve
143: \item Maximum number of students allowed in this slot
144:
145: \end{enumerate}
146:
147: \begin{figure}
148: \begin{center}\includegraphics[width=0.80\paperwidth]{slots_timeline}\end{center}
149: \caption{Reservability and Accessibility Timeline}
150: \end{figure}
151:
152: Note: a slot may not be reserved by a student after the open date/time of the slot.
153:
154: If there are multiple items in a course for which ``useslots'' is set to yes, a student may
155: make multiple reservations with a single slot, if resource-use restrictions on the slot
156: permit it.
157:
158: If there are multiple student-schedulable slots available in a course, with start times in
159: the future, more than one slot may be reserved by a particular student for a particular
160: resource, if uniqueness and/or resource use restrictions permit it.
161:
162: \begin{figure}
163: \begin{center}\includegraphics[width=0.80\paperwidth]{slots_uniqueness}\end{center}
164: \caption{Uniqueness constraints for multiple slots}
165: \end{figure}
166:
167: Furthermore, both instructor-assigned slot(s) and student-schedulable slot(s) can be in
168: effect for a particular student for a particular resource.
169:
170: On the student's side, information about items in course for which access is restricted
171: by slot is available from any of the following:
172:
173: \begin{itemize}
174:
175: \item The ``Manage Reservations'' utility accessed via the ``Reservations'' item in the inline menu.
176: \item Status information for each resource in the Course Contents listing.
177: \item Attempted display of the resource itself in the course.
178:
179: \end{itemize}
180:
181: In all three cases, if one or more slots have already been selected to apply to a
182: particular student when accessing that resource, and the end date/time has not yet
183: been reached, the description of the (selected) slot with the earliest (future) opening
184: date/time will be displayed alongside the resource name in the contents listing, or
185: below the message: ``Access requires reservation to work at specific time/place'',
186: when displaying the resource.
187:
188: Prior to the start date/time both the ``Manage Reservations'' utility, reached via
189: ``Reservations'' in the inline menu and the URL for the resource itself, will provide buttons
190: to Change or Drop an existing reservation, or to Select another reservation.
191:
192: When a student displays a resource for which a pre-assigned or selected slot is now open,
193: i.e., the start date/time of the slot is in the past, and the end date/time is in the
194: future, and any IP-based restrictions included for the slot are satisfied for the student's
195: current IP address, than either the resource will be displayed, or a Proctor validation
196: screen will be displayed in the case where check-in by a proctor has not yet occurred for
197: a slot which needs it.
198:
199: If the useslots parameter for a resource is set to yes, and it has a slot scope which
200: applies to the enclosing map/folder, then there are two additional possibilites: either
201: check-in only applies to the resource itself, or check-in for a resource automatically
202: propagates the checked-in status to other resources in the same map/folder.
203:
204: Once checked-in, the resource itself will be displayed, and the countdown icon above the
205: resource will countdown to the earliest of the following:
206:
207: \begin{itemize}
208:
209: \item the due date/time
210: \item the slot end date/time,
211: \item the time-limit, for a resource or folder in which the interval (time-limit) parameter
212: is in use (after the ``Show Resource'' button has been pushed to start the timer).
213:
214: \end{itemize}
215:
216: Once the slot end date/time is reached for the checked-in slot currently in effect for access
217: to the resource, if there are additional slot(s) which may be used to satisfy the ``useslots''
218: requirement for access, those slot(s) will then come into play.
219:
220: If there is a student-schedulable slot, which is reservable (i.e., both the slot start time
221: and end reservation time are in the future, and if a cap on number of students, if set, has
222: not been reached), then a student can reserve the slot in order to resume access to the
223: resource after the slot start time (which could require new proctor validation).
224:
225: Conversely, if the student already has a reservation for this second slot for this particular
226: resource, then assuming IP-based restrictions are met, the student will either be shown a
227: proctor validation screen if the slot uses a proctor, or if not, will be checked-in
1.1.2.2 raeburn 228: automatically when displaying the resource.\\\\
1.1 raeburn 229:
230: \begin{figure}
231: \begin{center}\includegraphics[width=0.65\paperwidth]{slots_proctor_validate}\end{center}
232: \caption{Proctor validation screen}
233: \end{figure}
234:
235: \textbf{Student View}
236:
237: In the case where an open resource has slot-based access, the Course Contents listing will
238: include information about the current reservation status.
239:
240: \begin{figure}
241: \begin{center}\includegraphics[width=0.60\paperwidth]{slots_navmaps}\end{center}
242: \caption{Contents Listing with Reservation Status}
243: \end{figure}
244:
245: The expectation for student-schedulable slots is that each student will use the `Reservations'
246: item included in the inline menu in a course with one or more such slots, in order to add
247: change or drop reservations for resources in a course which use them.
248:
249: \begin{figure}
250: \begin{center}\includegraphics[width=0.70\paperwidth]{slots_student_reserve}\end{center}
251: \caption{Interface for Initial Reservation}
252: \end{figure}
253:
254: If there is no `uniquely-chosen' restriction in force, then Select button(s) will be available
255: for additional slots after making a reservation. If, however, slots can only be selected one at
256: a time then the other Select button(s) will become `Change reservation' button(s) after a reservation
257: has been made. If a student wants to display just a single resource for which student-schedulable slots
258: are available then if the resource itself is accessed before the slot start time the same `Select'
259: button(s) will be shown for applicable slot(s).
260:
261: \begin{figure}
262: \begin{center}\includegraphics[width=0.70\paperwidth]{slots_change_resv}\end{center}
263: \caption{Interface for Additional Reservation}
264: \end{figure}
265:
266: If the `Change Reservation' button is pushed then a confirmation page will be displayed
267: which includes a `Process the change' button to push to complete the switch of reservation
268: (with `uniquely-chosen' restriction) from one slot to another.
269:
270: \begin{figure}
271: \begin{center}\includegraphics[width=0.70\paperwidth]{slots_change_confirm}\end{center}
272: \caption{Reservation switch confirmation}
273: \end{figure}
274:
275: Once the slot start time is reached, when a student accesses the particular assignment either
276: the resource will be displayed immediately (assuming any location-based conditions are met),
277: or if proctor validation is required, a web form will be displayed which requires entry of
278: the proctor's username and the secret word used for check-in, as set in the particular slot's
279: configuration.
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