I NEED HELP

1) DRAWING A CASE DIGRAM FOR THE FOLLOWING

2) WRITING A USE CASE DESCRIPTION OF CREATING A LIST ITEM OF THE FOLLOWING

3) CREATING A RISK MANAGEMENT DOCUMENT FOR THE FOLLOWING LIST MANAGER, INCLUDING POSSIBLE CONTINGENCY PLAN

THE THREE SHOULD FOLLOW THE THE DISCRIPTION GIVEN BELOW

A new App wants to provide a cross-device To do list manager for users. Users should be able log into the app from any device, and changes they make should sync across devices. Once logged in, users can create a new list item, giving it at least a name and due date, but optionally a priority and difficulty rating. Users can also view or search the master list, mark an item as completed, or ask the app to suggest their next task based on soonest due, highest priority, or least difficult. Draw a use case diagram of this system b) Write a use case description of creating a list item. c) Create a risk management document for the To do list manager, including possible contingency plan