3 man mechanic- center issue

[zeedonk]

I admit up front that I haven't been trained in 3 man mechanics, but my recent experience officiating in 3 man crews leads me to the following observation:

When at the center position, my coverage area includes half the lane/paint closest to me, correct? Assuming so, A1 has the ball at free throw extended and is defended by B1. I am able to see through and check for fouls, travelling etc... A1 begins to drive to the basket, still guarded by B1. While still in my half of the paint, A1 goes for a layup and is fouled by B1.

Assuming that I make the call (and I think its mine to make) it appears to me that this 3 man mechanic wants us to do what the 2 man never wants us to do, which is to make a call from behind or with one or multiple players with their backs to me.

Any thoughts on this? Should I be moving towards the basket with the player from the center position? Thanks.