[@robin-w Moderator 7 years, 9 months ago]

not totally sure what you are trying to do, but you could create a page and out the following shortcodes in it

[bbp-single-topic id=$topic_id] 
[bbp-forum-index]

where $topic_id is the topic you want at the top.

If you just want some basic rules, then you can create this as text and put it on a page above the [bbp-forum-index]