Hi @Patrick Rutherford ,
According to my research and testing, you can embed editable files on the site by changing action=embedview
to action=edit
, please follow these steps to test:
1.Select the file need to be displayed from the SharePoint library (e.g. Word).
2.Open the file in browser (Word Online) >> Click on File >> Share >> Embed.
3.Copy the Embed Code:
4.Edit action=embedview
to action=edit
in Embed Code, for example:
5.Now, navigate to your Modern SharePoint Online page. Add an “Embed Web part” and paste the code to Website address or embed code.
6.Save and Publish the page.
My test :(Two different users can modify the files in the iFrame and see each other's modifications in this page)
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