Using Fieldgroups with Entity Registration Module I'm using the Entity Registration module to create event signup forms.  I've got my first event registration form up and running and now want to group some of the fields into fieldsets.  

I have the Field Group module installed, and have used it to group my fields into fieldsets (via Manage Display):  



The effect I want to achieve is something like this:



However the fieldsets are not showing on the registration form or in the markup:



According to Field Group module, it should work with any entity:


  Fieldgroup will, as the name implies, group fields together.  All fieldable entities will have the possibility to add groups to wrap their fields together.


I've searched the Entity Registration issue queue, but can't find anything relating to this.  Has anyone managed to get fieldsets working with Entity Registration?
You need to add corresponding group to add steps in it. See image.