The ‘Party Up’ feature was announced alongside the release of the ‘Shadow War’ DLC and allows players to ‘share’ the new maps included.
Shadow War launched first for PlayStation 4 users on Tuesday, August 28, and features three new multiplayer maps, a new War Mode Operation, and one new Nazi Zombies Experience.
In order to begin the ‘Party Up’ map pack access, the Party Leader must be a Season Pass Owner and invite the remaining players to the lobby.
Once this occurs, players will be greeted with a ‘Shadow War Party Up Access’ screen to confirm.
Although the Shadow War DLC is only available on the PlayStation 4 at the time of writing, Activision confirmed that the ‘Party Up’ feature will also be present when it is released on the PC and Xbox One.
Call of Duty: WWII Party Up Map Access will be available until Sunday, October 28 at 10 AM PST.