This guide will be more direct and clear if you have "Menu Item" page open in your browser. Just go to yoursite.com/administrator and go to Menus > [Your Menu] (typically Main Menu) > New.
In layman's terms, menu layout is what Joomla! outputted visually, which also means what your site users and visitors will see from frontend.
Step 1
Step 2
Step 3
Choose in menu item type modal Online Web Tools then click on Tool
Step 4
Then in Tool option click on Select and choose tool that you want to display.
