so im playing a female character and so far every time i pick i position on one of my male slaves it puts her in the giving role. is it possible for a female pc to be the receiver?

Need to teach the male the positions you want them performing in by giving him books to read. Then initiate intercourse the other way round. Look at the little thumbnails in the position selection, dunno which way around it was, but the color of the dummies depicted in those thumbs denotes who is gonna be "donor" & who's gonna be "receiver"^^.

Or cheat it and save edit the whole thing. Open the save file with notepad++ or something of the sort, find the section for the character in question (put his name in the search function), then find the "eroMoves" field and add any of the positions you want for that char (like this for example: eroMoves: ["Bend Over","Handholding","Missionary"]; no spaces). 

These are all the positions so far:

SOLO:
"Bend Over"
"Bind"
"Dance 1/2/3/4/5"
"Kneeling"
"Lean Forward"
"Masturbate (F)"

COUPLE:
"Handholding"
"Blowjob"
"Facesit"
"Cowgirl"
"Reverse Cowgirl"
"Missionary"
"Standing Doggy"
"Blowjob (Rough)"
"Pin Down Fingering (Rough)"
"Pin Down Fuck (Rough)"
"Spanking (Rough)"

You just need to initiate the sex with the female -- that is, the female has the book/position and uses it to then select a male/futa to act as donor.