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- Sina Aringer (Professional rider at Hof Kasselmann)
- Ekaterina Aristova (Children European Team Champion 2016)
- Johannes Augustin (Professional Dressage Trainer)
- Axel Balkausky (1st German television channel „ARD” Sports coordinator)
- Tineke Bartels (former Team member for the Netherlands at Olympic Games, World & European Championships, Dutch national team coach for Pony, Juniors & Young Riders)
- Lucie-Anouk Baumgürtel (Pony European Team, Individual & Freestyle Champion 2016)
- Jean Bemelmans (France Team Trainer, riding master)
- Jessica von Bredow-Werndl (European Team Bronze medallist 2015)
- Kristina Bröring-Sprehe (FEI World Individual Dressage Ranking Number 1, Olympic Team Gold medallist and individual Bronze winner)
- Borja Carrascosa Martinez (Spanish Team member at Olympic and World Equestrian Games and National Championships)
- Richard Davison (Olympian & European medallist)
- Bettina de Rham (FEI Director of Dressage, Para-Equestrian Dressage, Reining & Vaulting)
- Cornelia Endres (German Pony Team Coach)
- Emile Faurie (represented Great Britain at European Championships, World Equestrian Games & Olympic Games)
- Lukas Fischer (career changer with various titles at federal and national championships)
- Anky van Grunsven (Olympic Games, World Equestrian Games Gold winner & European Champion)
- Jan Peer Hagenauer (fitness trainer of Ludger Beerbaum, Hof Kasselmann riders and many more)
- David Hunt (President of the International Dressage Trainers Club & Member of the Judging Supervisory Panel)
- Ullrich Kasselmann(CEO P.S.I. GmbH & Hof Kasselmann GmbH & Co.
- Dr. Marc Koene(German team veterinarian. FEI veterinarian)
- Prof. Edwin kohl (Gestüt Peterhof)
- Christoph Koschel (Team Bronze medallist at the World Equestrian Games in Kentucky)
- Ingrid Klimke (European, World & Olympic Champion in Eventing)
- Uwe Mechlem (FEI 5* Judge & member of the Judging Supervisory Panel and former member of the FEI Dressage Committee)
- Jeanien Nieuwenhuis (Young Rider European Team Silver medallist and Individual & Freestyle Champion 2016)
- Heike Osterkamp (international dressage rider and trainer)
- Diana Porsche (U25 European Freestyle Bronze medallist 2016)
- Judy Reynolds (Olympic Dressage rider from Ireland)
- Klaus Roeser (German Chef d´Equipe & Organizers representative at the FEI Dressage Committee & Chairman of the German Dressage selection committee)
- Prof. Dr. Martin Richenhagen(AGCO Cooperation, FENDT)
- Hubertus Schmidt (riding master, German team member at Olympic and World Equestrian Games, European and National Championships)
- Dorothee Schneider (Olympic Team Gold winner & German Freestyle Champion 2016)
- Evi Simeoni (Sports Journalist at “Frankfurter Allgemeine Zeitung”)
- Franke Sloothaak (former World- & Olympic Champion in show jumping)
- Monica Theodorescu (German Olympic Team Coach)
Lina Uzunhasan (TUR, Junior 5th at the European Dressage Championships 2016)
Kai Vorberg (Vaulting World Champion) - Nicole Wego (Professional rider at Hof Kasselmann)
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Isabell Werth (multiple Olympic, World & European Champion, most successful Olympic dressage rider so far)
Katrina Wüst (FEI 5* Judge, member of the Program Committee of the Global Dressage Forum)