Apple policy: Passcode

The Passcode settings section controls device passcode requirements and related security rules (for example, minimum length and complexity). 
Options
 In the Apple Policy Editor, passcode options are configured using a mix of toggles and numeric fields. Many fields include tooltips that indicate supported OS versions and supervision requirements. 
Passcode toggles
ChangeAtNextAuth: force a password reset the next time the user authenticates.
RequireAlphanumericPasscode: require at least one alphabetic character and one number. 
RequireComplexPasscode: require a “complex” passcode (no repeating/sequential patterns and at least one non-alphanumeric character). 
RequirePasscode: require a passcode without additional length/quality requirements. Note: setting other passcode keys implicitly requires a passcode. 
Numeric fields
FailedAttemptsResetInMinutes: minutes before the failed-attempts counter resets (requires MaximumFailedAttempts).
MaximumFailedAttempts: failed attempts allowed before the device is erased/locked (range: 2–11).
MaximumGracePeriodInMinutes: how long the device can be unlocked without requiring the passcode (0 = none).
MaximumInactivityInMinutes: idle time before the device locks (range: 0–15).
MaximumPasscodeAgeInDays: max passcode age before a forced change (range: 0–730).
MinimumComplexCharacters: minimum number of “complex” characters (range: 0–4).
MinimumLength: minimum passcode length (range: 0–16).
PasscodeReuseLimit: passcode history length to prevent reusing old passcodes (range: 1–50).