The building have 20 floors, the elevator #1 accept all the hall calls, and the #2 stay in stand by in the 1st floor. If have a h/call in the floor #15, the elevator #1 go to work with it, but at the same time have a h/call in the same floor (#1) as the elevator #2 stay in stand by, that elevator not respond the call. The #2 accept only the h/calls if they have a more than 3 h/calls. I need to change that but the owner have 2 elevators but only use 1.