Umnyango womlilo wensimbi ngokusho kokumelana nomlilo, ukusebenza komlilo kuhlukaniswe ngebanga A, B, C. Isikhathi sokumelana nomlilo sekilasi A umnyango womlilo wensimbi akufanele ube ngaphansi kwamahora angu-1.5, isikhathi sokumelana nomlilo sesigaba B somnyango womlilo wensimbi akufanele sibe ngaphansi kwamahora angu-1.0, futhi isikhathi sokumelana nomlilo seklasi C umnyango womlilo wensimbi ngeke ngaphansi kwamahora angu-0.5.

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