Once a user is given a username, and has a valid Primary Email in their profile, they are able to log into the system by requesting a password reset (if the Sign In Help Link is enabled), or using a temporary password that has been assigned to them. 

If a user's account is locked/disabled, they cannot log in.

For information on how to enable the Sign In Help Link, click here

For Information on how to bulk upload Temp Passwords, click here.

For information on manually assigning Usernames and Passwords, click here.