I'm with you, been trying to get answers on the shot & more mode for a bit now.
The only other modes I have been able to get are best face and eraser.
From what I can tell the phone needs to register a face for that option to become available.
For eraser, it needs some movement to trigger it, but it doesn't always come up.
I cannot for the life of me get the other one's to work. I really want to do a panning shot but it never becomes active.
Also, selective focus is another thing I cannot get to work.