Building test scenario for ATP

Hi Team,

I would like to build the test scenario for ATP process for my production order. In OVZ2 & OPJJ, i have maintained the below settings. And also i have maintained the relevant settings in OPJK & maintained the availability check "01" in material masters of BOM components.

OVZ2 setting:

Q1: In the above settings, for availability check 01, if i maintain "A" instead of "B", how the ATP results will differ from previous case? How to setup the test data to observe the difference between "A" and "B" case?

OPJJ Setting:

Q2: In the above settings, i have not checked the check box "Check without RLT". If i enable this check box, how the ATP results will differ from previous case? How to setup the test data to observe the difference between these two cases?

Thanks