Should a notification be sent to the team (probably its contact address?). In the case of a direct add, it would be "this team has been joined" and in the proposal it would be "this team would like to join your team, go to +blah to approve or decline this".
Should a notification be sent to the team (probably its contact address?). In the case of a direct add, it would be "this team has been joined" and in the proposal it would be "this team would like to join your team, go to +blah to approve or decline this".