The phrase "to herd the group" means to gather or guide a group of people or animals together, just like a shepherd does with their flock of sheep. Full definition
In addition to that, this popular breed of herding group is observed to be most happy when given continuous physical and mental activities. (dogingtonpost.com)
The Berger Picard moved into AKC herding group in July 2015. (picards.us)
Toy Group Terrier Group Herding Group Hound Group Working Group Sporting Group Non-Sporting Group (puppy-basics.com)