In the event dashboard click on "Content" from the side bar.

Click on the small gear icon (⚙) on the bottom-right of the activity wall page.

"Check" to enable and "Un-check" to disable the “Post Text” to allow/disallow the posting of pure text messages on the wall.

Available To
Everyone
Name
en
Icon
Select option
Post Text
Post Images
Post Gifs
Post Videos
Post Videos From Gallery
Admins can still post text, images and videos to the timeline irrespective of any of the above configurations being disabled
Advanced

"Check" to enable and "Un-check" to disable the “Post Text” to allow/disallow the posting of images on the wall.

"Check" to enable and "Un-check" to disable the “Post Text” to allow/disallow posting of Gif's on the wall.

"Check" to enable and "Un-check" to disable the “Post Text” to allow/disallow the posting of videos on the wall.

Un-check the “Post Videos From Gallery” to disallow the posting of videos from the gallery on the wall.

How to enable and disable allowing attendees to post text messages, images, videos and Gif's on the Activity wall?