I encountered a problem last night

I was running Campaign 1, in which I did not had any issue. Now I have to add a new campaign (2) on same instance on same server.
The problem is that the administrator of campaign 1 can also see the reports and everything of campaign 2. I don't want 1 to see 2 or 2 to see 1.
Kindly tell me if there is any way to have multiple admin instances to separate campaigns.
Thanks in advance.
Regards,
Aftab

