Equalization w/ Hypex Fusion FA123 plate amps

I hope this post finds all of this community safe during these troubled times.
Music has certainly done much to keep my spirit going.
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Sheltered in place, I have a bit of time for the next set of optimizations of my speakers.

Background

I have configured a pair of Hypex Fusion FA123 plate amplifiers using the Hypex software. I have now tri-amplified my speakers & they sound great or at least better in almost every respect to the prior iteration of the system.

I have currently set up 2nd order crossovers.
I have had it suggested to me that 4th order would work even better, but I frankly don't have a clue about implementing them with the Hypex amps.

Any suggestions or context about trade-offs one way or another appreciated.

Equalization

I do think I have something to gain by applying the Hypex equalization capabilities.

To prepare to do this, I have assembled the following:

Laptop w/Windows 10
UMC22
ECM8000 Measurement Condenser Microphone
2 USB cables (Fusion - usb - laptop & UMC22 - usb - laptop)
1 Analog cable (UMC22 - analog to fusion)​

What do I do now?

Clearly outside my knowledge base, but I have the time to follow guidelines and do any required research.

Any guidance appreciated.