(1) Every person (in this subsection referred to as "the first-mentioned person") acting in any character on behalf of any incapacitated person or person not resident in the State who, by reason of such incapacity or non-residence in the State, may not be personally charged under the Income Tax Acts shall, whenever required to do so by a notice given to the first-mentioned person by an inspector, within the time permitted by such notice and in any district or branch in which the first-mentioned person may be chargeable on the first-mentioned person's own account, deliver a statement described in section 877 of the profits or gains in respect of which income tax is to be charged on the first-mentioned person on account of that other person, together with the prescribed declaration.
(2) Where 2 or more such persons are liable to be charged for the same person -
(a) one statement only shall be required to be delivered which may be made by them jointly or by any one or more of them, and
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