In the P S tab Windows > arrange > there are tabs for 2 up ,3 up ,4 up etc. What happens if I have more than 4 clips that I would like to arrange , for example if I have about 12 clips , how would I get them to arrange in a 12 up vertically / horizontally position ?
Windows > Arrange > Tile All Horizontally/Vertically All meaning more than 6.
Of course each tile adjusts to make room for the others, and that means you would be looking at slat-sized windows for each image.
You could also try float all in windows and then move them around however best fits your monitor.