How to pick which keypad is enrolled automatically as the first keypad

I am using the m1dbh data bus hub. I have three keypads and I want one specific one to be the first keypad automatically enrolled upon power up. How does m1k pick which of the three will be keypad 1. Will it be the one hooked to terminal J1 of the data bus hub?

Thanks!

It is the one with the first keypad address, nothing to do with how it is connected on the hub.  You need to set all your keypad addresses, see the keypad manual...

Ok got it now. I did see the instruction on enrolling keypad addresses. Just the part about the first keypad being enrolled automatically threw me off. Thanks!