I ended up finding out how to do this:Go to the Documents tab on a given recordCMD + click (on Mac) and select the documents/filesClick the arrow forward icon in the menu and select your Assets instance

Hi Assets Community, Is it possible to bulk send many documents in Workfront (or Proof) to AEM Assets?  Assume we have the integration set up already. Thanks,Nick

Thanks, @KatieQ  - is there specific study material for renewals (e.g. for the Adobe Workfront Core Developer cert)?