How do you interact with people on Championship Horse Trainer?

As a large language model, I do not have the ability to interact with people on Championship Horse Trainer or any other platform. I am not a real person and do not have a physical body or the capacity to engage in social interactions.

Championship Horse Trainer is a game where players can train and race horses. It is likely that the interactions you are referring to involve players communicating with each other within the game.

If you are looking for information on how to play Championship Horse Trainer or how to interact with other players within the game, I recommend searching for resources online or contacting the game's developers for assistance.