auto booking in

not sure if this is the correct environment to ask this in but any direction would help

I want to mark items against a purchase order as received and i can do this fine against the podetm table

however im concerned about the standard sage functionality and what that does with stock ques and if it does anything else which is why i have previously not done anything regards booking in 

im familiar wiith a lot of sage tables as i create purchase orders and sales orders absolutely fine and do a few bits looking at sage