MIRO - Screen variant sequence

Hi,

In Transaction Miro >Enter The Company Code >Under The Basic Data TAB Enter The Invoice Date and Reference-->

Now In The lower half of the screen, Under The PO Reference TAB we have the Drop Down For Layouts. Say for example I have selected the Layout "PO History", what we see below, is the layouts formats for the one selected. Now I have to reset the position of a column say from the first to he last.

Is it possible, if yes, kindly let me know of the steps.

Br,

Vamshi