The YMAP is already placed inside the custom_maps dlc.rpf
(or you can simply drop it in your own version when you have other YMAPS already added)
Requires installation of additional mods
▶ Increased Props
▶ Open IV
▶ Object Spawn Unlocker
▶ HeapAdjuster
Installation procedure
Open OpenIV and go to mods/update/x64/dlcpacks and place custom_maps folder in there
Go to mods/update/update.rpf/common/data and edit the dlclist.xml file
add a new line for custom_maps
Credits:
velesum