The following steps are to describe the process of creating a new user (administrators restricted option):

1. Go to the Users section of the settings.
2. Hit the Create User button.
   
   
3. The following form appears; fill it out with valid information:
   
   
   Note that if you want to assign this user to a new department, not listed above, you can easily create one by clicking on the + Create New button.
4. Newly created user can be seen in the Users list now: