I am trying to create a workflow that will check through all the permissions on a document in a library (including extra explicit permissions) and change them from contribute to read only.
I'm quite new to the whole thing. So I'm just wondering if it's possible? If it is, could someone point me in the right direction please?
What I'm using: SharePoint Online, SharePoint Designer 2013, 2013 Workflow.
Edit: To clarify I'm using a 2013 workflow already that I need to insert this in to. When trying to select users, in most cases I wont know exactly who the users are and some may be external.