Great start on Drawing capabilities! Can’t seem to get the Radius or Diameter functions to create label/arrow.
There are two ways of placing radial/diameter dimensions, please give them a try:
The first is to tap on a circular shape with the pencil then select if the radial or diameter dimension should be shown:
Video 03-12-2021 13 06
The second is to select the Radial or Diameter dimension from the Dimensions toolbar in Drawings, then select the circular shape.
Going further, it is not always possible to dimension a round part on the end view. It may be necessary to dimension it in the elevation or even plan view. I think Shapr3D does not yet allow this. As of now it needs a circle or a radius to do so. Looking forward to this.