Consider just the tracking of recurring services, and list all of the requirements that you can imagine for that functionality. Be specific and answer at least the following:
a. What data will you need?
b. How will you input that data? Show a mockup of a data entry screen, and describe how it will be used.
c. Using your mockup, describe how you will modify recurring service data.
d. Using your mockup, describe how you will cancel a recurring service.
e. Specify any other requirements you believe are important for tracking recurring services.