It is possible to display Discussions directly on the Event page, in the corresponding button. This makes selected Discussions visible to as many Attendees as possible.
To do so, you'll need to click on the Add Button within Content Display and then choose Discussions.
Then, you can choose the title for this new Button, and find the Discussions that can be attached to it. You have the option to associate one or more Discussions with this Button.
The Discussion must have been created beforehand via the Discussions tab in the Studio. For more information, see How to create group discussions?