Although this is more of an alternative to custom matches but i hope y.
How to make a custom match in fortnite 2020 on xbox.
Select the custom match button located at the bottom right of the screen.
This will open up the queue.
If you want to start a custom matchmaking you need to click on game mode and then custom options in the lower right corner of the screen.
You can then fill in a code you decide on and start the game.
Enter the password provided from the tournament organizer.
Custom match making is a feature that allows players to set up private matches where only other players who they invite can join.
Navigate to the choose game mode screen at the bottom right.
The players who decides to create a custom match will be able to make their own key code which they can then share with the other people they are hoping to join them.
Ensure all players are on the same region as the host.
Password is case sensitive.