Create a note with an explanation on the MS Excel interface? Additionally, record the procedures necessary to safeguard the worksheet and its advantages.

I need help making a data flow diagram for the following use cases:  Intro/Homepage: This first case will be used to give the user the first look at what the whole project is about. They see the beginning stage and interact with all the links to the movies, characters, and descriptions.  Browse MCU Shows: This case will be for the customers and users to be able to navigate through the feature and see what they are specifically. They can use it to find which exact Marvel Cinematic Universe movie/show they wish to watch and see what character they like.  View MCU Movie Details: This case will be for users to get more information about specific Marvel movies/shows. It will give more details like the cast, the run time, the review score, the characters involved and etc.

Assume that your company uses a release methodology for its sales system. The current version is 5.5. Decide whether each of the following changes would justify a version 6.0 release or be included in a version 5.6 update: (a) Add a new report, (b) add a web interface, (c) add data validation checks, (d) add an interface to the marketing system, and (e) change the user interface. Explain with enough details to recieve full credit.

Specify the requirements for the final printed product.