25,132 questions
Hi @Grandma Jeanel ,
Thanks for reaching out. These settings are on the iPhone itself. I'm not sure what it is on iPhone 12 but for most phones it should be something like this:
Settings > Face ID & Passcode > Passcode Options
Otherwise it may also be under:
Settings > Touch ID and Passcode > enter 6 digit code
If you have trouble setting this I would recommend reaching out on the Apple support forums. https://support.apple.com/