Will that negate the crossing from B>A>C, or will it only confirm if the motion started in A then went to C?

Hello all, I've been racking my brain for a bit on how to setup zone crossings so that I only get alerts when someone comes up to my door from the street. I have a separated garage that sit in front of the house and I don't want alerts when I go from the house to the garage as I do this several time...