How to change your passcode lock?

Note: If the initial steps to set a passcode lock are incomplete, you will not be able to change your passcode lock.
To change your passcode lock
1. Open the Bigin app on your Mac.
2. Click Bigin in the menu bar that runs along the top of the screen.
3. Select Preferences in the dropdown to open Settings in Bigin.
Under Manage Privacy, you can find the title Privacy & Security.
4. Click on Privacy & Security > Passcode Lock.
5. Enter the current passcode.
6. Select Change Passcode.
7. Enter your current passcode once more.
8. Follow the steps to change to a new passcode.

Once you've set a new passcode, the next time you lick on the Bigin app icon to open the app, you'll need to use the new passcode to enter the app.