We would like to be able to set a timing for Replies to Forum Posts.

Example:
– a Teacher starts a discussion in a Forum;
– Students will be able to Reply to it for a period of time only;
– after that period, replies to that discussion are not allowed but will remain visible to Participants (Teachers and Students).

(I could only find a Setting for Timed Posts (still experimental) - but after the period set, they become invisible to Students...)