Spot directing of character

How do you get a character to sit behind and office desk?

this helps place the character behind the desk and into the chair

That and adding in a desk overlay

if im doing an over lay how would i get the desk to stay in front of her

Overlays are automatically placed in front of characters at default, until you change their layers yourself.

and how would i get the character to look like their typing i cant seem to find this behavior