[Editor] Is there a way to spawn buildings from different ages and civilizations, belonging to one player?

Hi,

so I've been messing with the editor lately and encountered a weird problem. Every building that is spawned has to belong to a particular player, or Gaia. Now, I would like to be able to put some neutral buildings on the map that I'm creating, for decorative purposes. Since the map encompasses a few different climate areas, so to say, I would like to use a few different architecture styles for that. Thus, put two or three Eastern European feudal huts here and there in the snow-covered, forested region. In other area, Southeast Asian castle age would be perfect, etc. The problem is that the map is for 6 players, so I have only 2 to spare, not enough. Is there a way in which I could place buildings from different ages and civs no matter the player shortage?