User roles give each user access to different features. User roles contain permissions which allow the users to do administrative things within the portal. One user role can contain several permissions.
In order to edit a user's role:
1. Go to Marketing & CRM> Users> Overview
2.Search for the user you wish to edit
3. Click on their name to be taken to their profile.
4. Click access rights on the left hand menu followed by user roles on the top tabs
5. Choose the roles you wish to assign and save. (If they are not visible by default click the show all roles button).