You don't have to launch the UGX Map Manager everytime to play it. You just need to run it once then you can launch Requiem from the "Mods" menu in game

Hey I added y'all (Tex and Mayham) on WAW so hmu sometime, I do have headset with a mic

Steam: ABeardedSwaney
COD WAW: Swaneynator

You need to press ~ and then type in map nazi_zombie_dome_snow