mark topics as done

I would really like to have an option to mark topics when they are done in the forums. For example, in our district we have a group to report the Einführungsabholungen, so each new Foodsaver is a „topic“, and after their verification it gets very unclear because one cannot see if a Foodsaver finished their Einführungsabholungen or not. When we could mark the topics we could be able to sort by finished and unfinished.