@prof-techno - If by “proposal” you are referring to stuff they are adding to the board and then you could then screen and “approve” it before it is displayed to all other board participants, then no, this is not currently possible.

If this is feature that you’d like to see in Miro, I would recommend adding this as an Idea in the Wish List category by following the guidelines here: Wish List: Everything You Need to Know. If you do create a Wish List Idea post, I would also recommend that you post a link to it back here, so that future readers of this post can quickly get to and vote for your Idea.

Thanks for the answer. I usualy use padlet, but it as some bug. So I trie miro, but I wish student could add  their stuff, and when every body has finished I show everyone the stuf of everybody and you can discuss about studends stuff.

Thanks for your answer, I add a post in wish list

https://community.miro.com/wish-list-32/stuff-validation-2134