How do I "Close" or "Lock" a Device?
1. Select the Apps Menu icon at the top right corner of your desktop.
2. Select SureLock.
3. Select Ok, Got it!
4. Select the check box next to Use by default for this action.
5. Select Sure Lock.
The open device is now closed.
See How Do I "Open" or "Unlock" a Device and What is the Difference Between an Open and Closed Device.