\label{Roles_Screen}
After logging into LON-CAPA with your username and password, you will see a screen 
where you can select your ROLE. LON-CAPA is a roles-based system. You can always use 
the same login even though your roles may change. You can be an instructor in one 
class, a TA for another class, and an author of resources -- all with the same 
username. Selecting \textbf{Roles} on the Main Menu will bring you back to the 
\textbf{Roles} screen. 

Two types of Roles exist in LON-CAPA: Authoring Roles, and Course Roles. 
Authoring roles are used to develop learning resources. The course role is where 
resources are inserted into courses. You may have multiple instances of either 
type of role. For example, each separate course has a course role. You may develop 
more than one construction space role depending on your depth of usage of LON-CAPA.