How to make dimensions visible in draftsight 2018

I can specify a tool radius, an arc radius, and the allowable error and it will generate the tool steps. I thought perhaps the arcs were confusing the command but I tried the same thing on a sharp corner and got similar non-function.Дoes your DRO have an arc function? I am unfamiliar with the DRO's specifically intended for a lathe but my DRO on the mill has that function. I keep following the prompts but keep getting the 'Dimension loses relation' error. If I can get the CAD tool to work, I would notate the X & Y numbers then 'dial it in' on my lathe and DRO.

The idea is to move the form tool around the arc in small X & Y increments to achieve a relatively smooth arc with minimal stair stepping. You move the form tool around the arc and the X & Y numbers reflect the change from 0,0. I accidentally got the X-axis working once, but I've since broken that, and can't get either axis working now.

I'm trying to define the X & Y steps that I need to make on my lathe cross slide, to make a 1in diameter cut with a 1/2in diameter form tool. Pics below (sorry for the repeat of Roller1): I have Draftsight 2018 Professional, that I bought it just before they went to the subscription model.ДЄnyway, I can't get the 'Relate Dimension' to work reliably.

How to make dimensions visible in draftsight 2018