I am using Vectorworks 2016 SP6 on an IMac. I would like to import some structural drawings supplied by the engineer as PDF files. I just want to import them onto their own layer in my overall construction document file. I googled how to do this for VW 2016 and got instructions to go File>Import>Import PDF etc. The problem is there is no "Import PDF" option from those menus. There are options to Import dxfs/dwgs, image files, etc. I have tried to import it as an image file to no avail. Any suggestions? Oh, I am running Acrobat 8 Professional as well in case that matters for plug-ins.