hi everyone.
just bought new imac apple, I got problem with apple keyboard, where is the insert key in aluminum apple keyboard to get pivot point,

also i am trying line up some object(box) together (aligning),
I cant use pivot point at this moment, can someone remind me what is the manual way to get pivot point?

I made this boxes, but the aligning is not good, as you see from the image there is some small gap is between them.

what is the easy way to align to object together without small gap.

thanks, if you know something please say something