Opening Inline Modals from main menu
Here is how to open modal sections from the main navigation:
Next, you will need to edit the section inside the page builder, the section that will be targeted from the menu, as a modal inline section.
Once all this is done, save and close the section options and Publish the page.
You will now need to navigate back to the menu options.
Use the custom ID that you’ve created for the section, inside the menu item, in the URL tab, and also make sure you add
# to the ID in the menu item.
Save the menu and you should now have the popup ready.
Here is also a video on these steps: