80. Where the conditions of subdivision 1 and this subdivision are met, the undertaking is entered into. The duration of the undertaking is(1) 3 years, in the case of a person described in paragraph 1 of section 59 of this Regulation;
(2) 10 years or, where applicable, until of full age, according to the longer of those periods, in the case of a person described in paragraph 2, 4 or 5 of section 59 or a dependent child accompanying the person referred to in section 59, if the family member is under 16 years of age on the date on which the sponsor’s obligations take effect;
(3) 3 years or up to 25 years of age, according to the longer of those periods, in the case of a person described in paragraph 2, 4 or 5 of section 59 or a dependent child accompanying the person referred to in section 59, if the family member is 16 years of age or older on the date on which the sponsor’s obligations take effect; or
(4) 10 years, in the case of a person described in paragraph 3 or 6 of section 59, or in the case of a spouse or de facto spouse of that person.