Thank you for your inquiry.

And I apologize for the delay in replying to you.

In regard to the way to create a plane of radius 1mm,

it is possible by configuring the value of [GRID],

[Corner Shape], [Arc Length] and [Bending Angle] of [Polygon Plane].

The procedure is as follows. Please apply this procedure to

the shape you would like to create.

*Please refer to the video I have attached.

1.Set the value of [GRID] to "1".

2.Select [Create PCB] >> [Polygon Plane].

3.Set [Corner Shape] to "Arc", [Arc Length] to "1" and

  [Bending Angle] to "90 degrees" respectively on the property window.

4.Create the plane.

  *The routing start direction can be switched by the [X] key.

The procedure above will allow you to create a plane of radius 1mm,

so please try this.

Thank you for your continued support!