My levels are not included when I packaged my game in 5.6

Hello! How can I select all my levels to be in the game when it doesn’t have Additional Maps to Cook like the old version? Right now I can pack only my default map. Please help TT

If you want to do it easily you can use my free plugin Level Bookmarks and add them from the dropdown menu:

However, the original option is still there in 5.6: