Can you tell us a little more about what you are trying to achieve?
Would it be enough for you to have your sales team monitor the group’s activity? That is a list of posts, in reverse order. Example: Discourse team - Discourse Meta
You could also use the “auto tag topic” automation, and set it up to add a specific tag to posts by members of a specific group. Then have your sales team watch that tag.
If you don’t want your members see the tag, you can put it in a tag group visible only to admins and moderators.