So - day 1 was 'down', 'drop down' and 'fold down'.
As alluded to by my lovely wife
@Beanwood I did have some challenges.....
'Down' was a given as "You're all trainers, so will be using this in your classes already.".

So - let's try this out.
Subject A: Bramble is brilliant at the drop down, after we'd had a few practice goes, and she worked out what I wanted. For the fold down though - nope - bottom goes UP in the air, and she just goes backwards. (Yes I'm sure I can resolve that but it's quite funny)
Subject B: Benson we aren't going to do drop down, as his elbows may be a bit sore. Fold down is no problem though. Model student - top of the class.
Subject C: Casper. Well. Casper is just Casper. Casper would just like the treats please. For the fold down method, with Casper in a stand, I lured from eye level, moving the treat, as if on a rail down towards his back legs. This is supposed to encourage him to collapse his front legs, and the rear fold under nicely. Not Casper. Casper will follow the treat, WITHOUT collapsing, and end up almost doing a head stand as the treat and his nose disappears under his chest....
We have a little more work to do.......
On to day 2 - Luring.........