On which cms can you implement something like those support?

Question

CMS

The bottom line is the following, there is a task: to make a panel of applicants, so that when filling out the form, the user would receive a link to the chat with a test task, where he could communicate with the curator. At the same time, for each group of applicants, you need to assign a responsible person who could only view his topic. Well, of course, notifications about new registration and new messages.

Answer 1

On self-made.
At best, something can be found on Envano. Or see crafts from Tamarnga.