There are times that a Team needs the input of a specific person or set of people for a specific topic. It's not appropriate to bring that person in as a Team member, as they don't need to be involved with other things being discussed and shouldn't see the team's history. Right now a new team would have to be created, which splits the content outside of the main team. It also may be a short-lived team depending on the length of the conversation/discussion. Ad-hoc group chat likely would not be ideal, since the content would be split.
Please allow the ability to add a non team member to contribute on a specific Post in a team, when they are added to the Post by the post creator/admin/team admin.
Customer support service by UserEcho