Article: Just look for the newly downloaded app in your app drawer and tap it.   In the settings menu, make sure the lock screen security feature is set to your liking. You can choose between a couple of password-based locks as well as patterns. Choose between the available settings like enabling vibration and the menu button. You can choose between themes in this menu. You can get more free themes by tapping Get Themes. Tap a theme to activate it. Depending on your theme, added customization options may be available to you. These include being able to set shortcuts, styles, and various texts. Once you’re done, test everything out and tweak as needed. Enjoy your newly customized lock screen!

What is a summary?
Launch the MagicLocker. Keep pressing next on the intro and tutorial screen. In the "complete action using" window select "MagicLocker". Configure MagicLocker. Configure themes. Start customizing.