Open the map tree. There, open the settings for the corresponding PLAYER.
There should be a parameter called City_per_week.
Added 3 minutes ago
Ah, I found it and configured it. Huge thanks to Quant :3
Added 55 minutes ago
Another question, not very important, but I really want to know:D How do I upload the "Please Wait, Loading" image? This is the one that appears when the mission is loading.