There are many ways to use a pendulum, the most common is communicating with your spirit through your guides or higher self by asking questions.
Your pendulum will need to be programmed the first time you work with it. Start by keeping your pendulum close for a few days so that it can soak up your energy. Next, relax, clear your mind, and connect with your pendulum by holding it close to your heart.
Programming your pendulum establishes cues for “yes,” “no,” and “maybe.” Using the hand that feels most comfortable, hold the pendulum between your thumb and index finger with your elbow slightly bent. Next, decide and demonstrate which cues represent “yes,” “no,” and “maybe,” for example, side-to-side, front-to-back, clockwise, or counter clockwise. Once your pendulum is programmed, verify the cues by asking it questions you already know the answer to. If the answers are not accurate, your pendulum will need to be reprogrammed.
Clean your pendulum after each use, so the divination will be as clear as possible. Material chain: iron.
Disclaimer: the information above has not been scientifically proven; they are based on the experience of users and therapists.