Annotation of loncom/html/adm/help/tex/Slot_Use.tex, revision 1.4
1.4 ! 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:
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, or a gradable external tool,
11: which can be useful in the case where students will reserve access in advance to content
12: at a particular time and/or place.
13:
14: One example would be a laboratory which has limited seating, and which is offered multiple
15: times over a given time period, but for which students should only be able to reserve access
16: for one particular opportunity. To support that type of scenario, slots would be used.
17:
18: Slots can also provide access control in which a proctor either directly, or remotely, must
19: enter a pre-determined proctor username and passphrase to check-in a student into a slot.
20: Prior to check-in, the proctor can validate that the student who will receive access to
21: content protected by a slot is the actual owner of the username for whom access is
22: being granted.
23:
24: One example would be an online exam in a testing center, in which a proctor would type in
25: the proctor username and passphrase into the proctor validation screen after verification of
26: the student's official photo ID. Another example would be an online exam in which a remote
27: proctor would temporarily take control of the user's keyboard and enter the proctor username
28: and passphrase remotely into the user's web browser.
29:
30: Lastly, slots can also be used as a reservation system, e.g., for office hours, where there
31: is no need for a student to actually submit anything to the assessment item for which access
32: is controlled by slots, but the time/date of the reservation itself made by a student to
1.2 raeburn 33: gain access is of value.\\\\
1.1 raeburn 34:
35: \textbf{Course Coordinator View}
36:
37: There are two parts to the process of using slots to control access to assessment items.
38: \begin{enumerate}
39:
40: \item An instructor will create the slot using the Slot Management utility
41: \item An instructor will assign use of slots to particular resource(s) in the course using
42: the Parameter Manager to set the ``Use slot based access controls'' (useslots) parameter
43: to one of the three ``Yes'' options.
44:
45: \end{enumerate}
46:
47: The slot management utility can also be used to modify slot settings after a slot has been
48: created. Slots can be created in two ways:
49:
50: \begin{itemize}
51:
52: \item Interactively, by using the multi-page slot ``helper'' web form which prompts for the
53: choices to be made when configuring a slot.
54:
55: \item By creating a comma-separated-value (CSV) file containing slot attributes and uploading
1.3 raeburn 56: the file using the Slot Management utility, see ``Uploading Slot Attributes File'' section (\ref{Slot_CommaDelimited}).
1.1 raeburn 57:
58: \end{itemize}
59:
60: \begin{figure}
61: \begin{center}\includegraphics[width=0.70\paperwidth]{slots_creation}\end{center}
62: \caption{Slot Creation Buttons}
63: \end{figure}
64:
65: In both cases an instructor will use the multi-page slot ``helper'' web form should modifications
66: be needed to the configuration of a slot after it has been created.
67:
68: As Course Coordinator use Settings $>$ Slots to access the Slot Management Utility.
69:
70: \begin{figure}
71: \begin{center}\includegraphics[width=0.70\paperwidth]{slots_manager}\end{center}
72: \caption{Slot Management Utility}
73: \end{figure}
74:
75: Slots are of two types:
76: \begin{enumerate}
77:
78: \item instructor-assigned
79: \item student-schedulable
80:
81: \end{enumerate}
82:
83: In the case of an instructor-assigned slot, after a slot has been created, and the
84: ``Use slot based access controls'' (useslots) parameter has been set to yes, the name
85: of the slot needs to be included in the value set for the ``Slots of availability'' (available)
86: parameter. That parameter can contain multiple : separated slot names, if multiple
87: instructor-assigned opportunities are to be provided to students to access a particular
88: resource or folder.
89:
90: \begin{figure}
91: \begin{center}\includegraphics[width=0.70\paperwidth]{slots_instructor_assigned}\end{center}
92: \caption{Parameter setting for instructor-assigned slot}
93: \end{figure}
94:
95: In the case of a student-schedulable slot, there is no need to set any parameter besides the
96: ``Use slot based access controls'' (useslots) parameter.
97:
98: \begin{figure}
99: \begin{center}\includegraphics[width=0.70\paperwidth]{slots_params}\end{center}
100: \caption{Parameter setting for student-schedulable slot}
101: \end{figure}
102:
1.2 raeburn 103: Although a Course Coordinator can use either Settings $>$ Content Settings $>$ Edit Resource
104: Parameters - Table Mode or Settings $>$ Content Settings $>$ Modify Resource Parameters -
105: Overview Mode to display values set for specific users for ``Slots of availability selected
106: by student'' (availablestudent), the preferred method is to use the Slot Management Utility.
107: The utility provides the ability to view a list of students who have reserved a slot, and
108: also to remove some or all of the reservations, as needed.
1.1 raeburn 109:
110: For student-schedulable slots, each slot includes a History link below the Edit link in the
111: leftmost column of the table of slots. The History link provides access to information about
112: reservations changes for the slot, including who made the change, and in what context.
113:
114: \begin{figure}
115: \begin{center}\includegraphics[width=0.70\paperwidth]{slots_summary_cc}\end{center}
116: \caption{Reservation listing for student-schedulable slots}
117: \end{figure}
118:
119: The expectation for student-schedulable slots is that each student will use the `Reservations'
120: item included in the inline menu in a course with one or more such slots, in order to add,
121: change or drop reservations for resources which are using them.
122:
123: In the case of a student-schedulable slot, the slot will only be selectable by the student
124: for use for any resources which require a slot (i.e., for which the value in effect for
125: the useslots parameter is yes), if all of the following are true:
126:
127: \begin{itemize}
128:
129: \item The resource is open, i.e., between open date and due date (if set).
130: \item The slot start date is in the future.
131: \item Any conditions on slot use based on resource, and/or section, and/or specific users are
132: met.
133:
134: \end{itemize}
135:
136: Further constraints on whether a particular student-schedulable slot will be selectable by
137: a student are available by setting one or more of:
138:
139: \begin{enumerate}
140:
141: \item Period of time when this slot can only be uniquely chosen
142: \item Time students can start reserving
143: \item Time students can no longer reserve
144: \item Maximum number of students allowed in this slot
145:
146: \end{enumerate}
147:
148: \begin{figure}
149: \begin{center}\includegraphics[width=0.80\paperwidth]{slots_timeline}\end{center}
150: \caption{Reservability and Accessibility Timeline}
151: \end{figure}
152:
153: Note: a slot may not be reserved by a student after the open date/time of the slot.
154:
155: If there are multiple items in a course for which ``useslots'' is set to yes, a student may
156: make multiple reservations with a single slot, if resource-use restrictions on the slot
157: permit it.
158:
159: If there are multiple student-schedulable slots available in a course, with start times in
160: the future, more than one slot may be reserved by a particular student for a particular
161: resource, if uniqueness and/or resource use restrictions permit it.
162:
163: \begin{figure}
164: \begin{center}\includegraphics[width=0.80\paperwidth]{slots_uniqueness}\end{center}
165: \caption{Uniqueness constraints for multiple slots}
166: \end{figure}
167:
168: Furthermore, both instructor-assigned slot(s) and student-schedulable slot(s) can be in
169: effect for a particular student for a particular resource.
170:
171: On the student's side, information about items in course for which access is restricted
172: by slot is available from any of the following:
173:
174: \begin{itemize}
175:
176: \item The ``Manage Reservations'' utility accessed via the ``Reservations'' item in the inline menu.
177: \item Status information for each resource in the Course Contents listing.
178: \item Attempted display of the resource itself in the course.
179:
180: \end{itemize}
181:
182: In all three cases, if one or more slots have already been selected to apply to a
183: particular student when accessing that resource, and the end date/time has not yet
184: been reached, the description of the (selected) slot with the earliest (future) opening
185: date/time will be displayed alongside the resource name in the contents listing, or
186: below the message: ``Access requires reservation to work at specific time/place'',
187: when displaying the resource.
188:
189: Prior to the start date/time both the ``Manage Reservations'' utility, reached via
190: ``Reservations'' in the inline menu and the URL for the resource itself, will provide buttons
191: to Change or Drop an existing reservation, or to Select another reservation.
192:
193: When a student displays a resource for which a pre-assigned or selected slot is now open,
194: i.e., the start date/time of the slot is in the past, and the end date/time is in the
195: future, and any IP-based restrictions included for the slot are satisfied for the student's
196: current IP address, than either the resource will be displayed, or a Proctor validation
197: screen will be displayed in the case where check-in by a proctor has not yet occurred for
198: a slot which needs it.
199:
200: If the useslots parameter for a resource is set to yes, and it has a slot scope which
201: applies to the enclosing map/folder, then there are two additional possibilites: either
202: check-in only applies to the resource itself, or check-in for a resource automatically
203: propagates the checked-in status to other resources in the same map/folder.
204:
205: Once checked-in, the resource itself will be displayed, and the countdown icon above the
206: resource will countdown to the earliest of the following:
207:
208: \begin{itemize}
209:
210: \item the due date/time
211: \item the slot end date/time,
212: \item the time-limit, for a resource or folder in which the interval (time-limit) parameter
213: is in use (after the ``Show Resource'' button has been pushed to start the timer).
214:
215: \end{itemize}
216:
217: Once the slot end date/time is reached for the checked-in slot currently in effect for access
218: to the resource, if there are additional slot(s) which may be used to satisfy the ``useslots''
219: requirement for access, those slot(s) will then come into play.
220:
221: If there is a student-schedulable slot, which is reservable (i.e., both the slot start time
222: and end reservation time are in the future, and if a cap on number of students, if set, has
223: not been reached), then a student can reserve the slot in order to resume access to the
224: resource after the slot start time (which could require new proctor validation).
225:
226: Conversely, if the student already has a reservation for this second slot for this particular
227: resource, then assuming IP-based restrictions are met, the student will either be shown a
228: proctor validation screen if the slot uses a proctor, or if not, will be checked-in
1.2 raeburn 229: automatically when displaying the resource.\\\\
1.1 raeburn 230:
231: \begin{figure}
232: \begin{center}\includegraphics[width=0.65\paperwidth]{slots_proctor_validate}\end{center}
233: \caption{Proctor validation screen}
234: \end{figure}
235:
236: \textbf{Student View}
237:
238: In the case where an open resource has slot-based access, the Course Contents listing will
239: include information about the current reservation status.
240:
241: \begin{figure}
242: \begin{center}\includegraphics[width=0.60\paperwidth]{slots_navmaps}\end{center}
243: \caption{Contents Listing with Reservation Status}
244: \end{figure}
245:
246: The expectation for student-schedulable slots is that each student will use the `Reservations'
247: item included in the inline menu in a course with one or more such slots, in order to add
248: change or drop reservations for resources in a course which use them.
249:
250: \begin{figure}
251: \begin{center}\includegraphics[width=0.70\paperwidth]{slots_student_reserve}\end{center}
252: \caption{Interface for Initial Reservation}
253: \end{figure}
254:
255: If there is no `uniquely-chosen' restriction in force, then Select button(s) will be available
256: for additional slots after making a reservation. If, however, slots can only be selected one at
257: a time then the other Select button(s) will become `Change reservation' button(s) after a reservation
258: has been made. If a student wants to display just a single resource for which student-schedulable slots
259: are available then if the resource itself is accessed before the slot start time the same `Select'
260: button(s) will be shown for applicable slot(s).
261:
262: \begin{figure}
263: \begin{center}\includegraphics[width=0.70\paperwidth]{slots_change_resv}\end{center}
264: \caption{Interface for Additional Reservation}
265: \end{figure}
266:
267: If the `Change Reservation' button is pushed then a confirmation page will be displayed
268: which includes a `Process the change' button to push to complete the switch of reservation
269: (with `uniquely-chosen' restriction) from one slot to another.
270:
271: \begin{figure}
272: \begin{center}\includegraphics[width=0.70\paperwidth]{slots_change_confirm}\end{center}
273: \caption{Reservation switch confirmation}
274: \end{figure}
275:
276: Once the slot start time is reached, when a student accesses the particular assignment either
277: the resource will be displayed immediately (assuming any location-based conditions are met),
278: or if proctor validation is required, a web form will be displayed which requires entry of
279: the proctor's username and the secret word used for check-in, as set in the particular slot's
280: configuration.
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