PRINCIPAL IDEA DEPEND ON QUEEN REARING FROM LARVAE WHICH ARE SISTER OF NURSE WORKERS AND PUT THESE CUPS ON LARVAE COMB NEWLY HATCHED (NON-SISTERS TO THESE WORKERS ) FROM OTHER COLONY THESE WORKERS PREFER QUEEN REARING FROM SISTER LARVAE AND AVOID THE REARING FROM COMB LARVAE ( NON ? SISTERS ).COMB LARVAE ATTRACT ALL NURSE WORKERS . MOTHER QUEEN OF SELECTED EXCELLENT COLONY IS REMOVED WITH LARVAE COMB INTO NUCLEUS BOX . AT THIRD DAY QUEEN CUPS ARE GRAFTED FROM LARVAE OF SAME COLONY (SISTERS) . THEN PUT ITS ON LARVAE COMB ( NON-SISTERS ) FROM ANTHER COLONY ( LARVAE AGE ARE LESS TWO DAYS ).SOON NURSE WORKERS FEED CUPS LARVAE AND CARE QUEEN CELLS TILL SEAL QUEEN CELLS . IN AGAIN TIMES OF THE REARING INTO THE SAME COLONY , MUST BE TAKING LARVAE FROM MOTHER QUEEN LARVAE (LARVAE ARE SISTERS NURSE WORKERS ) AND PUT THESE GRAFTED QUEEN CUPS ON LARVAE COMB WHICH ARE BRING FROM OTHER COLONY ( NON-SISTERS ). AS MENTION ALREADY . MUST DEFERENCE ALL ORDER OF QUEEN REARING AS NUTRITION AND BEE CONDENSATION ETC