How to rotate a shape layer?

I tried following the manual to do a basic rotation of a shape layer, but I only see a small center circle when I’m on hovering on one of the eight perimeter boxes of a shape, and as soon as I move off of the perimeter box, the small center circle disappears. Thanks for any help.

Ah I got it now. I was thinking that rotate would be available just based on where I hover, but I see that I need to press ‘W’ to get the rotation function to be active.