Step 1: Select the "7 Day Free Trial" button at the top right corner of any web page OR select a specific plan here to sign-up for a Stage Access membership.
Step 2: Before you proceed on the next screen to Create Account/Password for your new subscription, look for "Have a Promo Code? Add" and enter your code. See the below example.
You can also enter the code on the Add Billing information screen below your First Payment amount details. Look for "No Code Applied. Edit" and enter your code.