How To setup OTP verification on a phone number in Wix form

I need to set an OTP verification when the customer enters a phone number how can I do it with Wix using Velo or other

On what page the customer will enter the phone number? Wix Store checkout? Login/Register?

https://www.wix.com/velo/example/twilio-sms-integration

SMS integration example

Customer enter the phone number in a velo form ,not on store checkout ,So how to intergrate an otp verification at that time

@certified-code Thankyou for your support

Do I need to get twilio premium version? To sent OTP to unverified number