Can’t save custom maps to “shared files” folder

I recently finished making a custom map on forge world on pc, for my friends and I to play, however not all of my friends have halo mcc for pc but we all have it for Xbox. When I switched to my console my custom map was not in my files, I switched back to pc to try and upload it to my shared files folder but cannot find an option to do so. There is only a “save as” option that just duplicates the file onto the private files folder.