Dual Extruder Calibration

Hi All
This may well be a stupid question however…
I have just installed a dual extruder onto my TAZ6. Everything went quite smoothly and I am printing the calibration squares fine.

I measure the four gaps and enter the values into the offset calculator and each subsequent print gets worse.
So my stupid question is.
In the calibration calculator when it refers to left gap, right gap, top gap and bottom

Sitting in front of the printer is the top gap the at the rear of the print bed?
As per the photo below
Just confirming

This guy does a good job of explaining the setup and calibration.

I thought this video was on the Lulzbot website when I bought and setup my FlexyDually V2.

The video looks good