In fact, there is no big difference between using Huepar laser and other brand devices. So the first step is to install the level, for example, in the middle of the room. There are two modes: automatic and manual . In case of the manual mode, you should lock the level and adjust the angles as you need, while for automatic it needs to be unlocked, so the device can self-level. For rendering a particular beam, you need to press the button once. Pressing the button will change the beam direction.