If you are operating as Tower ATC then having an Approach ATC as well, can work great! You can be a great team.
But Tower, let the Approach ATC do his job and do not send Guard messages to Pilots who are with Approch!!! The Approach ATC will handover the Pilot to Tower. Just wait for that.
Planes fly to airports from all directions and Approach instructs Pilots so that planes line-up nicely in front of the runway, and then hand-over to Tower.
And this is hard enough with Pilots ensisting to flying VFR to a busy airport and ignoring instructions from Approach.
Pilots, consider this: on the Playground Server, where we are still in a learning mode, it may be better to obey Approach instructions from a learning ATC, even though they don’t make sense. At least we will learn…