How can I limit how often ads are shown to users? How to create ad chains?

Question

contextual advertising

1. On which sites can I control the number of ad impressions? Those. how to configure RK not to show more than 3 ads for the same cookies? And is it possible to make these settings for all campaign ads?
2. How to set up chains of impressions so that they are shown to the same user? Those. I have several options for banners that I want to consistently show to my target audience.