Currently, you can change your Shipping Account when creating postage in the situation you have two courier accounts. For example: we have 2 FedEx accounts and can switch between which one we want to use when creating initial shipping postage. However, when creating return postage we cannot choose which Shipping Account to purchase from of the 2 FedEx accounts we have. Our only option is to use the account which is set as the Primary option. We would love to have the ability to choose our accounts not just for the initial postage but also the return.