: Start a Custom Game . In the match setup screen, look for the "Game Mode" or "Victory Condition" dropdown menu and select the population cap mod you downloaded.
: Larger limits favor heavy armor. In a 500-pop game, late-game units like the ISU-152 or Tiger can dominate the field in numbers that would be impossible in a standard match. company of heroes 2 population cap mod
If you're ready to break the 100-unit barrier, these are the most reliable options currently available on the Steam Workshop Population Cap (by various authors) : Start a Custom Game