6.—(1) Subject to the provisions in sub-paragraph 6(2) and paragraph 7(1), where a deemed application relates to more than one of the categories of development specified in Part 2—
(a)an amount shall be calculated, in accordance with this Schedule, in respect of development which is within each category; and
(b)the total of the amounts calculated for each of the categories of development shall be the fee.
(2) Where a building is to contain floor space which it proposes to use for the purposes of providing common access or common services or facilities for persons occupying or using that building for development within category 1 and for persons occupying or using it for development within category 3 and or category 5 (such floor space being referred to below as “common floor space”), the category 3 and or category 5 floor space shall be assessed, in relation to that building, as including such proportion of the common floor space as the category 3 and or category 5 floor space in the building bears to the gross floor space in the building.