To activate the Alibaba sub-account function, you first need to log in to the Alibaba account management page, and then select "My Account" - "Sub-account Management" - "Open Sub-account".

Then follow the instructions to fill in the relevant information, including the sub-account name, contact information, etc., and then submit the application and wait for Alibaba's review.

After the review is passed, you can log in and manage related businesses through the sub-account. It should be noted that certain conditions must be met to open the sub-account function, such as corporate entity, having a certain credit rating, etc.

To activate the Alibaba sub-account function, you first need to register a main account on Alibaba's official website and complete real-name authentication.

Then enter "Account Settings" in the main account, select "Sub-account Management" and click "Apply for Sub-account".

Fill in the sub-account name, main account association information, permission settings and other relevant information, and submit the application.

Alibaba will conduct a review, and the sub-account function will be activated after the review is passed, and the main account can be used to manage and operate the sub-account.