(1) The Registration Officer shall hold a summary inquiry into every claim or objection in respect of which notice has been given under rule 19 and shall record his decision thereon.
(2) At the hearing, the claimant or as the case may be, the objector and person objected to and any other person who, the opinion of the Registration Officer, is likely to be of assistance to him, shall be entitled to appear and be heard.
(3) The Registration Officer may in his discretion :-
(a) require any claimant, objector or person objected to appear in person before him;
(b) require that evidence tendered by any person shall be given an oath and administer on oath for the purpose.
21. Inclusion of names in advertently omitted,- (1) If it appears to the Registration Officer that owing to in advertence or error during preparation, the names of any electors have been left out of the Roll and that remedial action should be taken under this rule, the Registration Officer shall,--
(a) prepare a list of the names and other details of such electors;
(b) exhibit on the notice board of his office, a copy of the list together with a notice as to the place at which the inclusion of these names in the Roll will be considered, and also publish the list and the notice in such other manner as he may think fit,; and
(c) after considering any verbal or written objections that may be preferred, decide whether all or any of the names should be included in the Roll.
(2) If any statements under rule 8 are received after the publication of the roll in draft under rule 11, the Registration Officer shall direct the inclusion of the names of the electors covered by the statements in the appropriate parts of the Roll.