Find the "Settings" option on the main interface and click Enter.
In the setting interface, find and click the "Game Center" option.
Click the Create New Apple ID button.
Fill in relevant information according to the system requirements, including date of birth, e-mail, etc.
After filling in the information, click the Next button to verify that the email address is valid.
If the email address is valid, a verification email will be sent to your mailbox. Open your email, find this email, and click the "Verify this Apple ID" link.
After completing the above steps, you can successfully create the second "Plants vs Zombies 2" account.
Please note that the above steps are based on the operation guide of Apple's mobile phone. If you are using another device or operating system, please refer to the corresponding user manual or online help document.