You can add a sub trainer to your account in no time!
Here's how you do it, starting from the "Account" section of your Trainer Dashboard:
Step 1: Click "Trainers" on the left-hand menu.
Step 2: Next to the search bar, click the "Add New Trainer" button.
Step 3: Fill in the correct contact information for your new trainer. When you're finished, click the "Add Trainer" button.
Now you're all set!