1. Open the Pony Healthy Parent Edition application.

2. On the home page of the application, select the "Family Members" option.

3. On the Family Members page, you will see the list of added family members. At the top of the list, there is an "Add" button, click it.

4. In the page of adding a child, you need to fill in the child's personal information and fill in the relevant information according to the prompts on the page.

5. After filling in the child's information, click the "Finish" button to complete the adding process.

6. The child's information will be saved and displayed in the family member list.