For licenses that include track stems, you'll need to upload them. 
Here are two ways to do it:

  1. Direct ZIP File Upload:
    • Click on 'Upload ZIP File.'
    • Choose a ZIP file that contains all your track stems.

(Recommended Method) Shareable Link:

  • Use platforms like Google Drive or Dropbox to create a shareable link for your ZIP file.
  • Ensure sharing settings are set to 'Anyone with the link can view and download.'

Both methods work just fine; it's a matter of personal preference how you choose to do it. 
That being said, the shareable link option takes a lot less time.
These options offer flexibility and convenience for providing complete track stems to your customers.