hding a body

[hipshot]

I'm new to this game, and despite several attempts I cant figure how to hide a body?
The hand does not pop upp on screen to alow that?
also despite being careful with placement it seems the body count gets way high way too quick and I end up with 3 guys to complete a misssion when can I read on how to heal guys ? Or is their a replacement pool?
I know these are noobie questions --- so no flames please. I am searching forums again for further info. I have a print out of much of the manual but not all of it.
Feel free to just point me to a page #.
Thanks in advance.