Allow to chose inputs/buttons column size for each line of Dialogs

Allow to chose column size for each line of buttons in Dialogs, because we can only put max 2 columns, or 1, or 3, or... for every lines in the same time.

But we can't for example have 1 big buttom to the top, 2 medium buttons bellow, 4 little buttons bellow and 1 big button at the bottom.

For example,in the pause menu there is 1 column for the 1st line (for the button to back to the game) after there are 2 buttons bellow, 2 another buttons below again, and 1 button at the bottom (for the button to leave the game). But we can't place buttons like this in Dialog...

So, we need to chose column size for each line in Dialogs please.

Or remove the column field and allow to set all buttons in the same column, but we can put a return to line instead of a button after another button to make another column.