Menu configuration
From LimeSurvey Manual
General
If you would like to create a new menu or add new entries to a pre-existing menu, access the Menu configuration option from the Configuration dialog.
Survey Menu
Create a Menu
Edit a Menu
[[File:]]
Delete a Menu
If you want to delete a menu, click on the red trash button that corresponds to that respective menu. If you click Delete now, all the menu entries of that menu will also be deleted.