Zello allows you to lock certain features with a passcode so children cannot see or use them. This includes channels, contacts, and account options. You can add allowed channels and/or contacts before locking these features.
For Android devices:
1. Go to Options>Restrictions>Lock restrictions
2. Enter 4-digit PIN code
3. Turn off features not allowed.
For iOS devices:
1. Go to Settings>Restrictions>Enable lock
2. Enter 4-digit passcode
3. Turn off features not allowed: