Current questions and answers regarding the map editor.

Oh, I apologize for such a silly question; when creating a map, the Subterra objects and those below immediately open for me, and I didn't even notice the scroll-to-top option. I feel ashamed. And one more question: when creating a map, I place two players on it, for example, red and blue. I want to play as blue, so I check the box for blue to allow a human player, and set the computer to not play as blue. For red, I do the opposite. However, when I enter the game and load the map, I can play as both, but not simultaneously. But when creating a campaign, the game loads, and I'm forced to play as red. What should I do?