You can edit a user's profile and the roles assigned to
them.
From the Admin menu, select
Users.
On the Users screen, select a user and click
Edit.
On the Profile tab on the Edit
User screen, edit the user's account details, as necessary. For
more information about a field, click the field name to display online
help.
Click Save, and then select the
Roles tab.
Note:
You must save these settings before you can access the Roles tab.
On the Roles tab, change the primary role, if needed,
and select or remove additional roles and capabilities.