AQS instructions for adding a sleeve:
https://www.youtube.com/watch?v=m_Vd82aSiAA
I have also done it the way where you sew it into the binding, but I had a paper pattern to follow for that one. It's not really any easier than the AQS instructions & it adds more bulk to that part of the binding so I now just follow the AQS instructions for all my sleeves.