Two steps to Folder creation in OneDrive or SharePoint using Microsoft Flow - no Graph required
Using Flow with Yammer’s All Company / All Network feed
The trouble is Flow does not except a Group ID of zero in the new message trigger so this post shows a way to work with those groups.
More automatic document numbering using Microsoft Flow
This post extends my original post for using Microsoft Flow to create Automatic Document Numbers in SharePoint. This post shows you how to create unique sequences based on different fields.
