1. Open the Settings application of your phone.
2. In the setting interface, find and click the "Apply" option.
3. In the application setting interface, select "Application Usage Time".
4. In the application time interface, click the "application time limit" option.
5. Turn on the "Application Time Limit" function switch.
6. Click "Add Time Limit" button.
7. In the pop-up list, select the application to be restricted, and then click Next.
8. Set the available duration of the application. You can select a specific time period or total duration of each day, and then click the Finish button.