Need to see DRO's of A-axis on mach screen.

[Mongkol]

Dear Sir,
I need the help. In the present, I can see DRO's of X,Y and Z on mach screen. I want to use A-axis as well. I want to see DRO's of A-axis on mach screen. How to set up ? Pls advise .

Mongkol

[Mongkol]

I can not see. Pls advise