JT sent me a download with the information but he forgot I was a millwrite for 40 years and I am electronic dumb. It's what electricians are for

.I am johnny, have a shopmaster elderado but one of the first ones and it was not wired for Mach3. It is now but I need help in setting up the VFD. I have CNC control of things but not spindle speed. I don't even know if you use the keyboard or the VFD key pad to program it and how do I get in that part?
Lots of questions for a dummy