Once you have one or more campaigns, you can link the campaigns to a zone. To do so, click thetab when viewing the zone. Check the box beside the campaigns you want to link. At this point the checked campaigns are linked to the zone.
If you are displaying the zone on your web site, then any banners belonging to the newly linked campaigns will be candidates for display in the zone.
To unlink a campaign from a zone, uncheck the campaign from the list of campaigns in.