How do you import navigation bars using Wix Studio - Figma import?

Using Figma Import into Wix Studio Editor.

I have created web page wireframes and designs in Figma. I have imported all frames for my home page into a new Wix Studio site as sections, including the header and footer navigation frames as seperate sections. All appear ok, but I can not see how to set header and footer sections I have imported to be the navigation that is used by my Wix site.

I can not see reference to navigation section in documentation or tutorial videos for Figma import.

Any ideas?