Right-click on the icon to access Lock Cursor Tools' context menu. The first option should tell you the setting that you have chosen, along with a keyboard shortcut. The default hotkey to trigger the lock is Ctrl + Alt + F12. Once you do that, the mouse cursor will be restricted to the selected area, monitor or window.You need to click as many times as possible before time's up. Feel free to try cps counter as many times as you want. Make sure to get your best score (CPS - Click Per Second).