Lay the pie chart (side one) face up, flat on a table and hold your pendulum directly over the chart's hinge-point (the spot the arrow points at). Specify the source of the pendulum's answers (your higher self) and ask your question. For example, "What is life's lesson today?" or "Help me understand the significance of ______________ (this could be an event or synchronicity that you want to explore the meaning of)". Wait for the pendulum to show you the card (or cards) that contain the answer. Your pendulum may begin in a circular or even an erratic swing. Be patient and it will eventually evolve into a directional swing - outwards from the point, over one or more wedges in the chart. When it settles into a consistent directional swing above one wedge, it is indicating the card shown in that wedge.
You can use the images on side two (see second pic) to take a closer look at a card selected by your pendulum on side one. To interpret the message or card meaning, refer to your favorite Tarot book. To verify a selected card, place side two face up and flat on a table. Locate the card in question and hold your pendulum about 1/2" above its image. If your pendulum is already programmed for yes/no answers, you can simply ask, "Is this the right card?" and watch for a yes/no/maybe answer. Another way to confirm a card is to say "Confirm if this is the right card." If pendulum swings clockwise, it's confirmed. If it swings counter-clockwise or is unclear and you'll want to go back to the side one chart to re-ask or even rephrase the question.