Using that option you can save the pattern as backup in case there is a risk of forgetting the pattern. Once you set the pattern lock for your PC, you can also take the backup of that pattern on your PC. To make the pattern a more complicated user can select the number of points among 3*3, 4*4, 5*5 patterns. From here you can reset the unlock patterns and create you own pattern to unlock your PC. After the installation open the app and you can see the main screen of Eusing Maze Lock.
To use this app, all you have to do is install the app on your Windows PC. Read Also: How to Add Notifications on Windows 8 Lockscreen Read Also: Use USB Drive as Login Key for Windows PC