Modifying a Subscription:
1. Login to your Noteflight account at https://www.noteflight.com/commerce/purchase_learn
2. Your current number of active users and add ons will auto fill.
3. Select your start date as immediate or on next renewal. If selecting immediate, the users/addons will be available for immediate use and the price will be prorated for the remainder of your subscription. If set up for the next renewal, the changes will take place on your next renewal date.
4. You may increase your user count or add ons.
5. Complete the billing information and then quote or purchase.