Adding a User to a Role
Click on 'Settings >Roles/Permissions'. Locate the role name that the user needs assigned to from the 'Roles/Permissions' table. Click on the hyperlinked number in the Users column.
A slider will appear; start to type the name of the user in the dropdown and select them to be added to the role.
Removing Users From Roles
If you need to remove users, simply click on the trash can icon next to their name: