Bottom left button takes you back one level. He needs to go froward. At the risk of repeating myself, touch the icon in the bottom RH corner of the screen in the photo on Post #3.I'm not familiar with CAT but from that last picture, I'd press the bottom left button.
Maybe you missed this……..You're logged in under an operator account instead of a master account. Default master is 1111. If you don't know it, I think you need factory passwords to reset it.
I totally missed thatMaybe you missed this……..