From the GWO website:

Delivery of the Hub Rescue Refresher Module covers the same content, duration, learning objectives as described in the initial Hub Rescue Module of the ART Standard.

The Hub Rescue Module training can consist of first-time participants and refresher participants in the same classroom.  The training is designed to allow the more experienced participants to contribute more actively and share their knowledge with the refresher participants.

Note:  If training is conducted with first time participants and refresher participants in the same classroom then first-time participants shall receive an ART-H record in WINDA and refresher participants shall receive an ART-HR record in WINDA.