Click Desktops tab

Add Trainer 1
Follow the first step, and add yourself as a trainer (Click the Green button)
Save Trainer
This is your account, so please click "Search in My Organization", then click Submit

You can optionally email the trainer(s) with the Course details, by ticking the box as shown

 

Trainers Added
If you wish to add additional Trainers, please repeat the process in the steps above.

 

Now you can see the "Fresh Start" and "Trainer" sections along with two Trainers appearing in the Desktops tab. 

Please Note : Each trainer in a multi-trainer set-up has the same abilities and permissions to set up and control the course. Again, when the course is underway, each trainer has the same controls available to him or her.