The purpose of this section is to get you to think in more detail about how your target audience will use the app you're designing and to account for these detailed needs in the proposal.
For this it can be helpful to create a brief persona description of a member in your intended target audience
Then, think about what they might want to do with your app and write small user story. User stories are typically written in a narrative style and include:
The specific context/background of the user
The overall goal of the user
Tasks needed to reach that goal
A hypothetical walkthrough of how the user would accomplish those tasks with your app
The outcome/action that the user would take based on the information they find in the app
The purpose of this section is to get you to think in more detail about how your target audience will use the app you're designing and to account for these detailed needs in the proposal.