Is it possible to have more than one administrator connected to a Security Management Server...

 It is possible to have more than one administrator connected to a Security Management Server at once, but objects edited by one administrator will be locked for editing by others until the session is published. This feature is called concurrent administration and it allows multiple administrators to work on the same security policy at the same time. However, when one administrator edits an object, such as a gateway, a rule, or a network, that object is locked for other administrators until the change is published or discarded. The lock icon shows which objects are being edited by other administrators and prevents conflicts or overwrites.References: [Concurrent Administration], [SmartConsole Overview]