I mentioned this in the DMX thread.
Although I have 4 par cans that are 4 chanel so I can run all 4 off two pages of faders by setting adresses to 1, 5, 9 and 13.
My mini spots are 5 chanel? Go Figure. To keep the desk simple I program 1, 9, 1, 9. Losing about 12 channels, but I don't have hundreds of fixtures and multiple universes.
This is where software comes in handy.
Useful to have a cheat sheet printed referencing each page, fixture and what chanels you're using. In case you want to alter lights on the fly instead of using programmed scenes. Essential when programming anyway.