Use a phone that supports dual apps, app clone, or dual messenger
Open Settings
Search for Dual Apps, App Clone, Parallel Apps, or Dual Messenger
Turn on the feature for WhatsApp
Open the cloned WhatsApp app
Register it with a different phone number
Verify the number with the OTP
Set up the second WhatsApp account
If your phone does not support cloning, install WhatsApp Business for the second account
Use a different phone number for WhatsApp Business
Verify the number with the OTP
Set up the second account in WhatsApp Business