Add a one-time product to a subscription
Log in to your account to add a product to an existing subscription.
1. Click the Subscriptions tab and select Edit next to the subscription you want to add a product to.
2. Hover over the product you want to add and select Add one-time. This automatically adds the product to your shipment.
3. You can click the Delivery schedule tab and select Manage add-on to manage or delete the one-time product.