This operation can be performed only by users assigned the Admin role.
To customize roles assigned to an exchange user, proceed as follows:
Navigate to the Users page in the Admin Panel main menu.
Locate a user in the list. You can use quick search to find a user by email.
Position your mouse pointer over the user, and then click the pencil icon.
If the tiles view is enabled for displaying the page data, click the details button (⋮) that is located in the tile header, and then select Edit role(s).
You cannot customize roles for the users whose profile status is set to Terminated.
In the dialog box that is invoked, expand the Roles menu and select the roles to assign to the user.
Click Proceed to save the changes.