E etselitsoe ka liteishene tse 3 kapa tse 4 tsa ho kenya, e ka hlophisoaHo latela litlhoko tsa bareki, 'me li ka sebetsana habonolo le eona habonoloesita le nakong ea ts'ebetso ea Peak ho netefatsa ho jarollats'ebetso.
Bophahamo bo botle ba Ergonomitic bo boholo ba liteishene tsa ho fepa bo fokotsa mokhathala. Ho boloka bolelele ba ho beha ho ka lekanngoa le litlhoko tsa basebetsi ba maemo a fapaneng le ho fokotsa matla a sebetsang.
Li-hang-hang li abeloa seteisheneng se seng le se seng sa ho lekanya ho netefatsa kabo e loketseng ea bantewaring ntlong e 'ngoe le e' ngoe ea mosebetsi.