The basic ForScore lets you keep track in the shooters database of people who are qualified as safety officers.  But match registration only has a check box to designate someone as Staff for a specific match.

With the Event Module, you can specifically designate who is regular staff and who is a safety officer for a specific match.

 

You will need to check the Sanctioned match check box in match setup to enable the additional registration features.

 

A check box will show safety officers on the registration screen.