bedienen

verb
  1. to serve or attend to someone, typically in a professional or formal setting, such as a waiter serving customers in a restaurant. verb
    The waiter will bedienen the guests at their table.
    In the restaurant, she was tasked to bedienen the customers efficiently.
  2. to operate or control a machine or device. verb
    He learned how to bedienen the complex machinery at the factory.
    You need to know how to bedienen the equipment before starting the job.