To get the orange FF tab, go to View > Toolbars > Menu Bar. This should uncheck the menu bar and give you the orange button.

Panorama is a box made of 4 grey rectangles that should be on the far right, if it isn't after you enable the orange FF tab, right click on anywhere on a tool bar that doesn't have anything on it, and you should get a menu with a list of your tool bars that you can check and uncheck. go down to customize at the very bottom and it will open a window with all your buttons. Find the panorama/tab groups button and drag it onto the tool bar of your choice.

to pin a tab as an app, right click on it; it's an option in the right-click menu.

Raine, thank you for your quick reply. I was getting very frustrated! I do have the orange FF tab now, and I see the pin as an app option. Thank you! But I still can't find the panorama tabs. I dragged the tab groups button to the tool bar but then it disappeared! I can only see it when I open the customize window. Is this the way it is supposed to work?

ETA: Ok I got it to work right! Thanks for your help!!