To use an automatic control system for a building hoist, first ensure the system is properly installed and inspected. Familiarize yourself with the control panel, which typically includes buttons for up, down, stop, and emergency stop. Ensure all safety protocols are in place. Turn on the system and select the desired hoist. Use the up and down buttons to control the hoist's movement. Monitor the load and adjust the speed as needed. Always be aware of the hoist's limits and never exceed them. Regularly check the system for any faults or irregularities and address them promptly. Remember, safety is paramount when operating a building hoist.