With the increasing diversity and complexity of the mission of general-purpose plane, airborne voice communication system is required to involve more members in a real-time call in missions. This study introduced a mixing method with 2 critical algorithms:mixing algorithm with real-time weights and dynamic clamping mechanism for single-output, and mixing organization logic for the customizable meeting. The mixing method brings a new design method of "customizable airborne conferences system" on the large-scale general mission aircraft.