This is what I did
I created 13 scratch lines evenly spaced in the centre belt. The pattern repeats every eight rows. Here are the measurements for the stud locations measured left to right from the inside edge of the windows.
Row 1: 7/8,2-3/8,6-3/8
Row 2: 2-3/8,3-7/8,5-3/8
Row 3: 1-3/8, 5-3/8, 6-7/8
Row 4: 2-7/8, 4-3/8, 5-7/8
Row 5: 7/8, 2-3/8, 6-3/8
Row 6: 2-3/8, 3-7/8, 5-3/8
Row 7: 1-3/8, 5-3/8, 6-7/8
Row 8: 1-7/8, 3-3/8, 4-7/8
Suggest you mark these out on paper and ensure you are happy with the spacing and pattern before drilling your track.