Can't Bind references permanently to drawing

I have Draftsight 2015 Professional version.

I often copy drawings or images into a current drawing but do not want these to be referenced to the original drawing/images, particularly if I am sending the current drawing to someone external to our company and network drives.  I read through the Help information in Draftsight and found the section entitled "To Bind References Permanently".  It gives the following paragraph:

To bind References permanently:

The Bind option makes a referenced drawing a permanent part of a drawing, for example, if you want to email a drawing or archive a finalized drawing. Bind the referenced drawing to the current drawing to avoid including an assembly of drawings in an archive or email.

  1. In the References palette, right-click a Reference and click Bind.
  2. In the dialog box, specify the Bind Type:See Using the Insert Reference - Bind Type dialog box.
    • Bind. Converts the Reference into a Block and uses unique symbol names for Layers and style definitions in the drawing using the blockname\\\$n\\\$symbolname syntax.
    • Insert. Detaches the Reference and inserts the referenced drawing as a Block.
  3. Click OK

However when I right-click on any reference in the reference palette on one of my drawings, there is no option given to Bind.  I'm assuming this changed with the DS 2015 upgrade.  Can anyone tell me how to bind such references to the document so there is not an issue later with the drawing trying to reference elements it doesn't have access to?