Well it's not possible by default, but you could probably add a check on the insertthread, if the threadid is in a list of those that would need this and if it is to add to a users rep.
If you plan on paying someone for this, you'll probably be better off asking in the service requests forum. Also, make sure to read this thread (
https://vborg.vbsupport.ru/showthread.php?t=69734) for recommandations on picking your coder.