If a user opens an Office product (Excel, Word, Outlook, Etc) they should be able to click File > Save As AdobePDF
If this option is missing the add-in may need to be enabled.
Check the active add-ins by going to File>Options>Add-Ins
If Acrobat PDFMaker Office COM Addin doesn't show under the Active Application Add-ins Under Manage: use the drop-down & select COM Add-ins & hit Go...
Check the box next to Acrobat PDFMaker Office COM Addin & hit OK
If the Acrobat PDFMaker Office COM Addin is not listed you will need to contact support to investigate the Adobe products installed.