Okay so let me explain what I am trying to accomplish, so what i am trying to do is edit my polygon pours to add about 20 mil space from edge of the board (the board has semicircle edges). Can anyone explain how to easily edit a polygon pour with arc shapes? I did notice in the layer stack chart there is a column that says "pull back". I tried playing with that but can't edit or input a value i want to create an edge to the copper pour. To edit the copper pour in a straight line point by point would not come out clean without so many small segments. Any advice would be greatly appreciated.
Confused and frustrated,
P.S. Thank you for taking the time to read and possibly even help! Also still using Solidworks PCB 2019.