This article will show you how to remove group permissions for a user.
Important Note:
If you are an administrator and want to delete a user so that they can no longer access the site, they will still be able to log in using the Forgot Password function. To remove access to restricted areas of the site, the user will need to have permissions disabled for all Back-End User Groups as well as any appropriate Front-End User Groups (Intranet Groups).
Who can use this feature?
System Administrator | Owner
Instructions
Navigate to Modules and on the Site Tools tab, select User Administration
Search for your user
Select the user
Scroll down and un-check the box next to a group to remove their group permissions
Scroll up and click Save
