Creating training shows?

Hi all.. I am able to create shows for disciplines, but how do you go about creating training shows?

It seems this has currently been disabled due to some issues. (Using training arenas, at least.)

But in order to create training shows, go to your stables (in the dropdown under "home"), and then click on "view arenas", under the little barn picture.
I believe you start with however many arenas you had in the previous version, with each able to run 2 training shows per day. Clicking on them individually will let you change the name of the arena, and set the discipline and the grade that they train for. You can also add training slots there.