You can search for users who have a specific role assigned.
In the Administrator interface, click Accounts.
Click Find Users in the secondary menu. The Find Users page opens.
Locate the search type User has [Select Role Type] role assigned.
Select the option box and use the Select Role Type drop-down menu to filter the list of available roles.
A second role menu opens.
Select a role.
Clear the other search-type checkboxes, unless you want to narrow your search further.