Form arrangeMethod Horizontal flush right , won't split correctly

I’m trying to create groups inside a group and having their width split evenly for 50% of the form.

I’m able to do it verticaly when the parent group have the arrangeMethod = vertical.

6327.11 (2).png

When I change the arrangeMethod to Horizontal flush right, I got that


Is it possible with Axapta V3 to do a horizontal split evenly?