Which is the default licensed pump?

Scenario:

You have a license for 3 pumps, and you connect a fourth pump.

The default licensed pumps will be the three pumps with the lowest address.

So if the three pumps had addresses #1, #2, #3 and you connect a pump fresh from the factory (where all pumps are address 0) your licensed pumps would be the new pump #0, #1,#2.