Opening eyes on caracter

I would like to know is there a procedure with what rigger is opening eyes to character. I have learned to box model character with closed eyes, how is procedure to open it? With scale on Z axis with what pivot point and transformation orientation? Does I need to select loop of faces or edge loop? Do I select two edge loop because mine eyelids must have thicknes. When I scale it, up eyelid can not be round.
Does it matter at all, maybe you make shape key from any deformation, so I can use move tool too for that eye opening?
https://drive.google.com/file/d/199O4Gkgvyg7F4H4-nNHccMDAwWv71r9E/view?usp=sharing
https://drive.google.com/file/d/1XudHHKewOiP00xKvs0IleItFOYdpZemu/view?usp=sharing