![..//assets/img/kb/subsystemIconBig.png](..//assets/img/kb/subsystemIconBig.png)
Administrators with visibility to multiple subsystems must select a subsystem when issuing a new key in order for CyberAudit-Web to know which holidays pertain to the key, since a key can only contain one set. Once issued, only administrators with visibility to the specified subsystem will be able to see the key.
Changing Subsystem
Changing a key's subsystem will affect these areas:
- Holidays loaded into the key or fob
- Authorizer assignments
- Visibility of the key or fob to administrators in that subsystem