Please help to solve this case study: SystemsDevelopment Methodologies

Case Study Suds To Go Introduction Suds To Go specializes in providing mobile car detailing. The company travels to the customer's home or client work site with all of the supplies to clean and detail personal or commercial vehicles. Clients can save time and gas money by not having to take their car to a car wash. Your responsibility will be to take the information in the Business Summary section and create the deliverable documentation. Business Summary Existing System The current system is completely manual. Customers contact the sole proprietor of Suds In Go via social media messaging to book an appointment. Messages are returned within 24 hours and the customer can arrange to book an appointment for one or more vehicles to be cleaned and detailed. The maximum number of vehicles that can be booked at one time is 12 vehicles (commercial fleets of vehicles or company cars) and this will use an entire day of booking time (6 hours plus travel time) and will require 5 employees plus the owner to attend the appointment. Appointment times are typically 30 minutes for exterior wash and detail only. Interior and exterior cleans take 1 hour. There is a 50% surcharge for cleans that require the removal of stains or odours and this must be noted at the time of booking because the appointment will be booked for 1.5 hours. Vehicles can be cleaned one or two at a time. To clean one vehicle, 4 employees typically attend except as noted above for a booking of more than two vehicles. There are three full time employees plus the owner/operator and during the months of May-September the company employs 6 part-time students who work on a rotating basis. They work out their schedule each week in a shared chat. Customers message with their name, address, vehicle make and model and desired booking date, time and service. The owner messages back to confirm that there are no stains/odours and that the vehicle is not oversized (Suds To Go only cleans vehicles seating 8 or less passengers) and then confirms the booking and sends it out on the group chat to see who can work that day. All three full time employees are expected to be available Tuesday-Saturday from 8AM-4PM. When additional employees are needed, the first part-time employee(s) to respond on the group chat get to also attend the booking. Suds To Go accepts mobile payments of debit only (no CC). They also accept cash. Often, the employees attending a job will receive a cash tip at the end of the job and the owner prefers to split this evenly amongst all the full time and part-time employees and not just those who worked the job where the tip was given. The owner keeps the cash in a tip envelope and divides it evenly at the monthly team meeting. It can be hard to track who receives tips when people are on vacation or miss a team meeting to take a booking. Several of the part-time employees have complained that they have missed out on tips from the tip envelope. The owner keeps a paper list of clients names and addresses that they have visited but this is currently the only piece of documentation kept over time and the owner has no way to reach out to their customers for repeat bookings or reviews. Suds To Go does get reviews on social media however they would like to establish more of an online presence and figure out how to save their contacts more efficiently to be able to offer promotions and advertise during less busy times. It is also difficult to report on revenue and predict income because the data is all on paper. Proposed New System The owner has decided digitize their business by paying for a website which will integrate with social media and accept mobile payments by debit or credit card. The website needs to work on both desktop and mobile with full admin access on mobile since they are often working with only access to their phones.