The header menu is the main menu at the top of the website.
To edit it, go to Appearance > Menu. Select the menu named “Header Menu”.
To add items to the menu, select them from the boxes on the left then click Add to Menu. Once they are added to the menu, you can drag-and-drop to change their order, modify labels, etc. Don’t forget to click Save Menu when you’re done.
The footer menu is the menu at the bottom of the website.
To edit it, go to Appearance > Menu. Select the menu named “Footer Menu”.
Configuring the footer menu works in the same ways as the header menu as described above.