Umsebenzi wevalve yebhabhathane yombane uza kusetyenziswa njengevalve yokusika, ivalve yokulawula kunye nevalve yokukhangela kwinkqubo yombhobho.Ikwafanelekile kwezinye iimeko ezifuna ukulawulwa kokuhamba.Yiyunithi yokubulawa okubalulekileyo kwintsimi yolawulo oluzenzekelayo lweshishini.