Campaign pages are an action type that is only available to groups by invitation, which allow you to collect a group of different actions together onto one action center-type page.
For example, let's say your group was having a week of action around a certain topic. You could imagine your week of action might include a petition, a few marquee events, and a tell your story form, all revolving around your week of action's theme. You could create a campaign page to collect all of these actions together on one page, so you could point activists to it and tell them that this is where they can take all of their action for the week.
Campaign pages are a feature only available to paying partners. To become a partner, please visit https://actionnetwork.org/partnerships