The method is as follows:

1. Confirm whether the qualifications meet the requirements: Meituan Waimai has certain requirements for the selection criteria of merchants, such as merchant reputation scores, service quality, etc.

2. Log in to the Meituan merchant platform: Use a Meituan merchant account to log in to the Meituan merchant platform.

3. Enter the Account Center and Global Settings: In the Meituan Merchant Platform, find and click the "Account Center" option and enter the "Global Settings" page.

4. Turn on the Food Preference Button: In the global settings page, find and turn on the "Gourmet Preference Button" or a similar switch.

5. Submit the preferred merchant application: After completing the above steps, submit the application for the store to become the preferred merchant at the corresponding location.

6. Waiting for review results: After submitting the application, you need to wait for Meituan to review it. Review times will vary and there will be a certain waiting time.