[Prevent Multiple Campaign Banners On The Same Url]

Hi, 

 

I am wondering if anyone know how to solve for the following situation:

 

• I create a campaign with multiple banners for multiple zones. 
• One my homepage URL, I have more than one zone
• The zones have a rotation of campaigns in them
• How can I prevent the same campaign showing up in two zones on the same homepage URL. The campaign banners should both have a chance of showing up in one of the zones on the same URL but shouldn't show up at the same time. 

Thanks

 

[Competing Banners On One Page]

How do i stop 2 banners, from the same campaign showing up on the same page? Each banner is in a different zone in a roation so sometimes show up at the same time. How do i stop these banners competing?