Creator to WorkDrive workflow | Missing "Upload file" WorkDrive action in Flow or not?

Creator to WorkDrive workflow | Missing "Upload file" WorkDrive action in Flow or not?

I am trying to build a Creator app with a form through which files can be uploaded to WorkDrive and simultaneously added to a Creator database. As far as I understood, automating this Creator-WorkDrive workflow can best be done with Flow, offering greater flexibility than direct WorkDrive integration in Creator (for instance, the creation of an elaborate folder structure should be automated as well). However, I am stuck as I can't follow the steps that should be taken in Flow:
--> Can you please explain to me, were I supposed to see an
"Upload file" action under the app WorkDrive in Flow, and if so, why can't I see it? I don't believe it should have anything to do with my company's plan as we have Zoho One. Please clarify. I have come across multiple instances across Zoho where I either notice or suspect that some functionality is missing, but don't know of any reason for why.
I searched on this forum and found an old thread about this where people complained about "Upload file" not existing, but then I saw a more recent post about "Upload file" and it seemed to be written as if it does exist (but maybe I misunderstood as I am completely new to the Zoho environment), so I am confused.