Can we block comments on a "sticky" post? Diane March 07, 2016 17:57 Follow Yes, you can easily disable comments on a "sticky" post by: If you are a group leader or forum moderator, you can prevent comments on a forum post at any time by following these directions: Go to [group name] > Discussions. Find the Discussion topic you want to disable comments, and click on the title of that message. Click the "flag" checkbox at the bottom of the message. Below the topic, a box will appear. Un-check "allow comments" and submit.