To minimize props for the exterior of a 2-story mansion with numerous windows, I would like to be able to measure out the location of the windows and make the first and second-story walls one .png file I know how to do transparency, just need instructions for how to use the zxy coordinates in the game to gauge windows locations for what will be on a prop like a wall or 3x3 tile sign. Has anyone attempted this? Thanks.

Hugs and love💕
Chilie