Once you have added a new user, it seems obvious, but like the "bike riding" analogy you need some help the first time.
Review the PDF from the Administrator training class (click here) to get a thorough explanation of setting up new Users.
It is Important to remember:
1. A New User must have a valid Role Assigned before he may log in.
2. Users are responsible for their own Passwords. The Administrator may assign a new User a Password, but the new User maintains that password or changes it as he wishes.
3. Users may be removed from the application by removing any Roles assigned to User profile.
See the Admin Guide to learn about setting up new Users and establishing their sharing rights with other users.
