Kwimodeli ejwayelekile, setha amayunithi okukhipha ukuze alawulwe ukuphuma 1 no-2 ngaphambi kokufaka isilawuli.
Kumodeli yendlela yesikhundla, uphiko lokukhipha kabusha lusethiwe. Ngakho-ke, lo msebenzi wokusetha akudingekile. (Ungabuthanga amanye amayunithi okukhipha.)
Lapho usetha amayunithi okukhipha, dweba indlela yangaphakathi kusuka ezindlini bese ufaka amayunithi okukhipha ezisekelweni zokulawula ukuphuma 1 no-2.