Abstract: Entitlement cards having an offer term and number of user licenses for a subscription to an online service can be applied to existing subscriber accounts to add or otherwise adjust the number of user licenses associated with the subscription. When an entitlement card is added to an account, the system automatically adjusts the amount of time for each user license so that an entire value of an entitlement subscription is used and a same expiry date is maintained even when adding new user licenses to an existing account. A user interface is provided that enables a customer to change the number of user licenses for a subscription when redeeming an entitlement card to their account and view a new end date for the subscription as a whole resulting from a change in user licenses during a current subscription.

Abstract: Application logic and user interfaces are separated to allow more than one interface or view to be easily employed for given application logic. A particular interface can be utilized to display data and/or facilitate interaction simply by identifying the interface. Available interfaces are identified to users for selection thereof. The specific interfaces and manner of identification can be filtered or otherwise controlled or arranged. Upon selection of an interface, data can be rendered accordingly. A transition can also be applied between switched interfaces.