A few points:
- Open Google Expeditions
- Upper left make sure you select the 3 lines and sign-in
- Select Library (bottom of screen)
- You will see your downloads
- Select My Tours (right side)
- Find your tour
- Download to view or guide
- You will then have options to View, View in VR, or be a guide
- If you choose Guide a pop-up box will come up with a four digit code to share with your audience
Embedded below is a 2 minute and 14 second YouTube tutorial.
Take care and enjoy!