After completing your drawing.

Go to Machine Tools

                Select Mill

                     Select either VCM (#3 or #4)

Next go to Toolpaths

                     Select Pocket Toolpath

The chain menu appears

Select each of the entities in turn that you wish to chain. When finished click OK.

The tooling menu pops-up.

           select a tool from the library (either click in the white area or select library tool button)

Note the three tabs.  After selecting the tool from the library, click the Pocketing Parameters tab.

Be sure to make the Depth negative.               The third tab is to set the cutting pattern.

Click OK.

To generate the NC code click the G1 icon.

If you get warnings like the one below ...

you will need to closely examine all the corners and intersection.

  This   or this  or gaps can cause this error message.