3The operator shall, before receiving any bets in connection with any race, post in a conspicuous position on the track a notice showing the minimum stake (hereinafter referred to as " the betting unit") which will be accepted at the totalisator from persons betting on that race; and that notice shall also—
(a)specify the percentage, not exceeding six per cent. which will be deducted by the operator from amounts staked by means of the totalisator; and
(b)if the terms on which the operator invites persons to bet include such a condition as is mentioned in paragraph 6 of this Schedule, specify the time referred to in that paragraph.