You can help the elderly at home to apply on their own cell phones, the solution is as follows:

Tools/materials

Huawei P40

HarmonyOS2.0.0

Alipay 10.2.59

1, open Alipay, search and open with the application.

2. Go to the interface of Alipay, and click on the code of Alipay.

3. Go to the interface of the application code, and click on the relatives' application code.

4. In the Follow-Up Code interface, click Relative Follow-Up Code Application.

5. Fill in the identity information of your relatives, and confirm the next step to complete the application for relatives with the code.