How to align button block in xcode?

Question

Apple Xcode

All the best!
I'm starting to program for ios, and there are a lot of interesting things that I still can't keep up with everything that interests me :)
I created several buttons in xcode, so that I get a block of buttons, but it's somehow difficult for me to move all 12 buttons exactly. I know that I need to dig in the direction of the constraint , but ...
this is how my buttons look now:

Answer 1

Throw 3 buttons into a horizontal UIStackView. Then we throw 4 such stacks into a vertical UIStackView.
Ready.