Tbi tuning help

Hey guys. I had a few questions I was hoping yall could help me with. First off I got me a apu1 and tuner pro rt and am trying to learn to tune my tbi Silverado. I've been reading through the forum trying to find what I need but thought I'd ask here. I'm looking through the parameters on tunerpro for the BJLF bin I'm running but im not finding the ve tables to adjust af ratios. Could somone point me to the right table and how to change them? Also I was wondering if I need to get excel to use some of the spreadsheets I find on the forum. Thanks for any help