I am wondering if there is a way to determine the user entity type (SPPrincipalType) in a Nintex workflow. If somebody could help me I would greatly appreciate it.
Up to now I could not find a solution. Some sites I looked into: http://blog.bonzai-intranet.com/analysthq/2011/01/how-to-identify-if-sharepoint-person-or-group-field-entry-is-user-or-group/
In the Nintex Forms People Control under Advanced (see the attachment) I could find out that there you can include the user entities like "User", "Security Group", "SharePoint Group".