I'll be happy to try and give you some pointers.
Triangulate your monitors equally from each other and from you. PERFECTLY using a measuring tape or laser. Then move on.
You can take as many "groups" of measurements as you wish. Simply put, you can do more then one and name it accordingly so you can choose from the drop down menu.
Just remember, with all the effort in doing this, you might as well put in the pain and time once, up front, then it's done at your best. I did two sets of measurements, 32 each or the maximum samples and when finished, the curve was ever so slightly different but I chose the one I thought was best or most balanced. I deleted the unused test from my library preferences.
Since you will need your work station, "mixing position" done first, use the diagrams I have put in the article for starts. I did the one chair studio but project studio might be better? I have a larger monitor and they are spaced farther away etc.
Sit in your chair, Let your tape Measure fall from your ear to the ground. That is exactly where you want your mic tip to be. I had to be carful to not angle the mic as I moved it around. That was the one area I had to be carful of.
I used the width and depth of my chair for the center area when starting the first cluster. So your #1 position will be dead center of where you sit. Using the dimensions of your chair, you can measure equally from the 1st measurement to #s 2, 3, 4.
Keep using the equal distance idea for the remaining measurements. If you do these measurements in advance, you can use some tape with a digit for the reference. Then you can simply place the mic where you have the tape.
Going beyond the first 14 means assessing the remaining area. Try to consider your 1st position in reference to the remaining measurements and keep them equal if possible.
Use an X pattern. left front, right front, left rear, right rear etc. Always do a left to right in the opposite position.
Shut off any air conditioner, fans or heaters. Keep the room quiet. BREATH quiet.
If you mess up a test, go back and redo that one measurement again, no problem.
Find a place you can stand out of the way ate you hit the mouse to start the measurements.
Set the level at the outset with the your amp set half way, preamp in the normal position and let the program have some headroom when turning up the level. Its ideal to have everything as centered as possible
Bypass all EQs
Let me know how it turns out.