1. Click Settings -> Users -> Default User Types.
2. Click the User Type you would like to edit permissions for:
3. Make your desired modifications to the User Profile.
4. Click “Save”. 
   1. This will update the permission profile for all users assigned this User Type. 
   2. A list of those users are on the right-hand side of the window.

NOTE: If you do not want updated permissions to apply to a particular user, uncheck their name on the right.