The user controls the horse with just hands and voice, see also
youtube.com/watch?v=eUvh5TDzTHE (Riding and transfer)
youtube.com/watch?v=V1TMkbVivOs (Annikas history and riding)
youtube.com/watch?v=zkH4HGLZr8w (Riding lessons), last checked June 2021.
She transfers to the horse with a lift and uses a custom seat with trunk support, see related tips.
This tip is from 2013