You can now also add clickable content on xatframes. The clickable area is below the chat/banner at a certain position (please see the image below).
This may vary depending on your screen size.
By removing all tabs from your group, the bottom tabs navigation is not shown (as you can see above in the image).
If you choose to keep tabs, the tab is loaded by default and the user has to minimize the navigation by clicking "close" to reach the clickable area.