Abstract: A building system includes an elevator system installed in a building. First and second waiting zones for users of the elevator system are specified, wherein the second waiting zone is located in an access region to an elevator of the elevator system. The building system further includes a call input apparatus that receives an elevator call from a user located in the first waiting zone or in a fixed environment of the first waiting zone, and a control apparatus that is communicatively connected to the call input apparatus. In response to a call input from the first waiting zone, the control apparatus can either request the user to wait there until they are called to go into the second waiting zone or can request them to immediately enter the second waiting zone. An allocated elevator can be communicated to the user in the first or second waiting zone.