Ex200-3 LC Aux Attachments

Hello, I have an fairly decent ex200-3 that came with aux hydraulics already attached, I'm curious does the aux hydraulics have its own pump & flow rate or does it work off of the main pump and flow rate? if its own does anyone know the flow rate of the aux hydraulic option? I think the main pump flow rate is 48.9 GPM, I'm asking because I'm looking to put a mulching attachment to this machine.

Ex200-3 LC Aux Attachments