Can anyone please guide me to Get and Set SPUser / SPUserCollection field using Visual Studio Workflow? When I read the field using REST API, it is only giving the User IDs (integers). Now, I have no idea, how to use these to set the users in a SPMultiUser field. If at all, I have to use these IDs to query the User Info list, it would involve multiple calls, since there are multiple IDs returned. I believe, this won't be efficient.