Can I add a menu or a list of scenes?

Yes, on the Design tab, under Navigation. The Top nav bar – multi menu is a website-style menu across the top of the tour: tick Show menu bar and it shows a menu for each of your panorama groups by itself, or click Customise menu to build your own from scenes and links, then click Done and Save & Render. Side nav – list menu is a sidebar that lists the scenes, and Bottom nav – thumbnails is a row of scene thumbnails. The Info and media panel (under Content) can show the scenes too, in a Panoramas tab beside each room's text and media (Show a Panoramas tab); switching it on switches Bottom nav – thumbnails off (the Info & Media Panel). Build a Top Nav Bar - Multi Menu also says what a public page needs to show the bar, and Customize the player's bars covers the others.