Brahamsthan is the lobby or center of the plot. Brahamsthan is the place of Brahma that is the source of energy. However, correct estimation of the Brahamsthan is required for doing Nabhi Vidhi and receiving positive results. Covering the Brahamsthan from the top is suggested but it shall not be compressed. It shall remain open is so the energy may spread all over the house but it gives positive results if is covered from the top.