Hi Emily, thanks for this step by step guide, it's useful. However we'd like to call a web service logged in as another user who's got the permissions to do it (add user to group or create list for example). because the logged in user calling the workflow won't have these permissions. Is there a way of impersonating another user - like in the WF action 'Office 365 Create Site' where we can get another user to create the site.
We are in a SharePoint-Hosed App.
Thanks in advance for your help !