Can we regulate whether Campaigns cannot or must be shown simultaneously on a webpage.
If you want to make sure the campaigns are shown simultaneously you will have to choose the Inclusivity function. This is found under Edit Campaign Groups in the box which says Exclusivity/Inclusivity.
If you on the other hand wish to make sure that the different campaigns are not shown simultaneously you can choose the Exclusivity function.
The Inclusivity/Exclusivity documentation has more information on this.