Create a Forum Using Macros
There are two ways to create community forums in Confluence, using either the Community Forums Blueprints feature (recommended), or by manually adding the macros to a page.
In order to create a forum manually, you can add the Community Forums macro to the page where you wish to have the forum.
Any child page of the page with the forum will automatically become a topic in the forum. If you don't want this to happen you can select Unmark as Topic in the ellipses menu of the page to remove it as a topic.