Convert 2D to 3D in Corel Designer?

Hi - I am trying to do a simple technical illustration for a template for one of our instrument housings.  I know the drawing coordinates are accurate by x- and y-coordinates, as are the placements of the holes (also by x- and y-coordinates).  I have also added a bevel, using the extrude tool, indicating a 0.125" depth for the bevel when I create it.  I'm unclear on how to convert the 2D drawing to a 3D object.  I'm hoping there is some very easy function or tool I haven't learned how to use yet to accomplish this.  A 3D file is the desired outcome.

Using Corel Designer 2019, and I have little experience.  The tutorials seem to be fairly limited, save the ones regarding Callout tools and Dimension line tools.

Any and all input is greatly appreciated.

Thanks.