The Gallery action type allows you to visually enrich your Burger Menu by displaying a collection of images in a gallery layout. To get started, click to add a new item to your Burger Menu, enter a title, and select the Gallery action type (1), then proceed by clicking Upload Media (2).
This will open the media library. Here you will find media files that have already been uploaded to your tour’s library.
You can select images that were previously manually uploaded to the library (1), as well as tour images, automatically pulled from your Matterport photos - by checking the box next to each image (2).
If you wish to upload new images from your computer, click Upload File (3), then Add Image: 
You can upload up to 10 images at a time, with a size limit of 10 MB per image (20 MB for Business and Enterprise users). The maximum resolution is 2048 pixels for width and height.
Once you select the images from your device, they will appear in the upload list:
Click Save when the upload is complete. These files will now be stored in your tour’s library media collection. To add them to your Burger Menu gallery, reopen the settings of the relevant Menu Item, click Upload Media again, and select the desired images from the library media:
To complete the process, scroll to the bottom of the media popup and click Import:
Once your images are imported, you will see a list of the selected items: 
If needed, you can rearrange their order by dragging and dropping them using the icon with six small dots, as shown above. When everything is set, click Save.
This is how the Gallery feature will appear within the tour:
If you have further questions or need assistance with the settings, please contact us at support@treedis.com