To change the existing 4-digit passcode, please follow the next steps:
From the Profile, go to the Security tab.
Click on Change Passcode.
Then enter your existing passcode.
Continue and choose the type of Passcode by clicking on the Passcode Options and selecting the desired Passcode type.
Depending on the chosen Passcode type, you have multiple options.
When selecting 4 or 6-digit Passcode, enter the new passcode and confirm the new passcode.
When selecting the Custom Passcode, enter the new passcode and confirm the new passcode.
If your Passcodes match, you will see the following screen.
And you’re all set!