Follow these steps in the Security Bank app:
1. Go to your Account Details page.
2. Select Lock Money from the quick links.
3. Choose how much you want to lock.
4. Review your request.
5. Confirm using your TPIN or biometrics.
You can lock part or all of your available balance. The amount you lock cannot be higher than your current available balance.
Once successful, your available balance in the app will be updated. Your locked amount will also appear on your Account Details page.