Hi @Anonymous ,
Could you share more details on “There does not seem to be anything obvious to link the Flow to OneDrive link if I was linking it to SharePoint”?
Which browser are you using?
Please try with a different browser, or clearing caches and cookies to see if it will work.
I have made a flow with OneDrive for Business trigger “For a selected file”, then with a file selected, click the Flow button, the flow will be displayed likes below.
By the way, I am using Edge on my side.


Best regards,
Mabel