1) Is it possible to link the groups of specialists or departments only to the topics they need in the solutions? That is, the department can create topics only in the topics they allow, they should not create topics in other people's topics.

2) Notification of specialists or departments by groups, created / updated / approved / rejected, only those users who are in groups (owners of topics).

3) How to maintain versions of attached documents and created titles in order to minimize duplication in attached documents and titles.