ارجو الافادة عن معنى معامل التباين diversity factor0

I get good answer so i would like to submitt
in a two zone building one zone is an office area and the other is conference room
if 10 people work in this building ,we have apeak design of 10 people in both zones .
however when sizing the main coil of VAV system serving both zones it only needs to hanle 10 people only not 20 .
(FOR THIS EXAMPLE ADIVERSITY OF 50% WOULD BE ENTERED (10/20
THIS WILL REDUSE THE PEOPLE LOAD SEEN BY THE COIL REFLECTED ON THE AIR HANDLER AND BUILDING PEAK LOAD SUMMARY REPORT