Okokuqala, izibonelelo zokulungiswa kweerim zamavili kukuba iqinisekisa ukhuseleko, iphucula ukusebenza kokusingqongileyo, kwaye yandisa ixesha lokusetyenziswa.
Okwesibini, kukho unxibelelwano olusondeleyo phakathi kokhuseleko lokuqhuba kwezithuthi ezinamavili amavili. Ukuba isithuthi siqhutyelwa ngaphandle ixesha elide, kungakhathaliseki ukuba sikhuselwe njani, kuya kuhlala kukho umonakalo ohlukeneyo kunye nokukhubazeka. Ukuba ayiphathwa ixesha elide, kulula ukubangela iingozi zendlela.
Kwakhona, ukulungiswa kwerim yamavili kunokucoca nokunciphisa izinto ezingcolisa umoya ezinje ngomhlwa nomhlaba ongaphezulu komphetho wevili, kunciphisa ngokufanelekileyo ukungcoliseka komoya okubangelwa kukuqhuba kwesithuthi.
Ekugqibeleni, i-rim yevili ehlaziyiweyo iya kwenza ifilimu yokukhusela yangaphandle, ikhulise ngokufanelekileyo ukunamathela kwivili levili kumphunga wamanzi, okwenza kube lula ukuba isithuthi singcoliseke ngexesha lokuqhuba. Oku akugcini nje ngokugcina ukubonakala kwevili levili, kodwa kuphucula ubomi bayo benkonzo.