What should I do, most immediately, when my father passes?

My father is dying of colon cancer, as you know, and I don’t think he’ll make it through the weekend. I am here today, took a day off work, because I have a feeling this is it. I have taken care of all the funeral, cemetery, hospice arrangements and I know how to handle this emotionally and psychologically. I’ve been trying, however, to find what exactly will happen right after his body expires in that what necessary steps do I need to take to prepare (if at all) the body…for example, should I put wee-wee (those bluish pads I use for when dogs pee or when I change my infant) pads under him, should I cover him with a sheet, should I keep the room cold? In my life all the death has been sudden or in hospitals or away from my eyes…I like to be steady and in control of things so any help would be appreciated…I just want to know what were some of the steps you’ve taken if you’ve ever helped someone pass on…thank you, ahead of time…any links would be great too…I’ve looked on google but it just gives me all sorts of useless crap about christ and religion and all that…