So I was controlling EDDF ground and tower, and everything went well. In peak hours there were approximately 20-25 Aircrafts on the ground and another constant 10-15 in the air, wanting to land. The wind allowed me to use RWY 25C for takeoff, and both 25L & 25R for landing. If everything went as it should have, this setup would be super effective (as in the real world, this is their go to setup for the airport, as the gates are closest to RWY 25C). As the line for RWY 25C grew on the ground, so did the line up in the air. At first contact, every plane requested 25C, and I tried telling them on all kind of ways that I want then to land on 25 L/R, but most of them ignored my signs and proceeded their final for RWY25C, which in turn forced me to cancel takeof clearance for the planes on the ground. If the landing pilots wouldn’t have been so stubborn, I could have departed one aircraft every one/two minutes depending on aircraft size, instead of the 3-5 minutes it turned into.
This would be avoided if I had like a mini atis function for the tower controller telling which runways are for what, and that would also help communication with approach.
Now I’m reaching out to all experienced ATC controllers aswell as other users to hear what you have to say.