grid and buttons

Welcome to the forum

It's difficult to understand what is the problem.

D should occupy the space occupied by the two buttons at the top A and B

What does it mean ? That's not what the drawing shows

Anyway, looking at the drawing, you have several ways:

• if you use storyboard (UIKit), it is very easy to position the buttons in a view, either in absolute coordinates or with constraints settings.
• you can also create buttons in code setting the correct frame
• you could also use a grid, but it is over complex for such a simple thing
• If you use SwiftUI , you create 2 HStacks, containing A, B, C and the second D, E ; then you encapsulate them in a VStack ; code would look like

VStack {
  Spacer()

  HStack {
     Spacer()
     Button { A }
     Spacer()
     Button { B }
     Spacer()
     Button { C }
     Spacer()
  }

  Spacer()

  HStack {
     Spacer()
     Button { D }
     Spacer()
     Button { E }
     Spacer()
  }

  Spacer()
}

So please explain clearly what you do not know how to do.

this is what i would like to achieve, button D should have the width of buttons A and B

Seems like a job for Grid multicolumn cells!