As Standard there are three Role types:
Administrator - Full Access.
User - Standard User.
Report Creator - Report Creator.
If you have full Administrator access yourself, you can manage which user accounts have which roles by doing the following:
Click Options then click Accounts.
Click Users and then select the User.
Select Groups & Roles.
You can add which role you would like to each user account.
The Role restrictions and permissions are managed in:
Click Options and then click Accounts.
Click Roles.
You can add whichever role restrictions or role permissions you wish to allocate within this area.