How to create submenu in Site Builder

To add a submenu for your site, click the Other Settings tab when editing a subpage. Once there, select Parent subpage and save changes.
 Submenu in Site Builder

The submenu will be created automatically and you'll be able to edit it by clicking Submenu Settings tab:

 Submenu in Site Builder

Now that you know how to add a submenu to your site, you can create a site with a lot of pages properly organized.

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