midpoint provisioner starts with not working

  Michael Gettes
    20 hours ago
  in latest Grouper - I quickly tried to add a midpoint provisioner and I was led to believe the Starts With would create a functioning provisioner.  BUT… I hit submit after I fill in the basics noted by the documentation and I get:
  Error: you need to operate on groups, entities, or memberships
  What did I not understand from the demo during TechEx and from the documentation?