You can add your menu to a page using the following shortcode:
[fdm-menu id="1"]
Where 1 is the ID of the menu.
To use this shortcode on the page edit screen, just click the + button and add a new shortcode block to the page. Then write or paste in the above shortcode.
Attributes
The fdm-menu shortcode takes the following attributes:
id Accepts the ID of the desired menu. Must be an integer.
show_title Whether or not to display the menu’s title. Accepts 0 (hide title) or 1 (show title).
show_content Whether or not to display the menu’s description. Accepts 0 (hide content) or 1 (show content).
Example:
[fdm-menu id="1" show_title="1" show_content="1"]