Custom Training is where you can set up your own custom training for your team to see.
To add this you'll see a link to add custom training. You first do have to enter some content to the home page, click on the edit link under operations, and enter some training on this home page.
If no training is added on the home page than the rest of the training pages will not show to your team, they will see an error.
Make sure you click on "Toggle Instructions" to review the definitions