i didnt really get what you were trying to say 
the network replication is basically there so that the replicated actors can be replicated to clients. if a object is not replicated the clients wont be able to see them. if for example you spawned 10 of the same actor they will be able to do their own thing. if you are talking about setting different things of a actor for each actor spawned then that can be done before spawn using blueprints.
or if you have a AI character which roams and u spawn 10 of them all of them are gonna get random positions to roam and from what i know they shouldnt roam at exact points.
Explain the question a bit more so i can help you better.