To add a new item to the Keybinding menu, you need to create a new Input Action.

In order to add a new item to the Pause menu or Main menu, you need to edit the "WBP_PauseMenu" or "WBP_MainMenu" widget.

The widget calling logic is implemented in “BP_MainGameInstance”.

You need to create a project.

Carry out the migration.

  Transfer the "Localization" folder from Content to the Content of your project.

The same should be done with the "Config" folder.