12x18 specific Requests

Currently I'm in the process of trying to print out one of my wind ensemble charts and I'm having trouble figuring out how to format to 12x18 in the way I want to.

Specifically, I'm trying to get each page printed on one half of a 12x18 sheet of paper to fold in half later, typical of regular wind band prints, but I cant figure out how to do it within MuseScore 4. Does anyone have any idea how to do what I'm asking, or is this not enough information?
Thank you!