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.

Move the "Config" folder to your project folder.

If you have blueprints that are repeated in the project, they need to be merged, for example PlayerController, GameMode Blueprints.