To add functionality to the Virtual Tours I use Walkinto.
Great platform and extremely dedicated people to work with!
You can
  • Add Navigation – Multilevel navigation as classic or thumbnail mode.
  • easily design hotspots and include pictures, videos, audio, slideshows and more.
  • embed it into your Websites and other social feeds easily.

It works perfectly well on mobile, tablet and desktop devices.

It works with or without Google hosted tours!

Add a navigation and Interactive hotspots onto your Tour