How to install additional rear hydraulics on Kubota M8200

[Riversidefarms]

I have a Kubota M8200 and it only has two rear hydraulic valves (which are in use now for a front hydraulic 3 pt hitch). I wanted to an additional hookup to the rear, but I don't know a thing about what parts of kits I would need, and if the M8200 can handle 3 rear hydraulic valves? Can someone please list out all the parts I'd need to make to give my M8200 1+ more rear hyd valveS?

Here's some specs on its Hydraulics:
Type: open center
Capacity: 13.7 gal [51.9 L]
Pump flow: 17.1 gpm [64.7 lpm]


THANKS!