Paragraph 8
A charging scheme may:
(a)
make different provision for different cases, including different provision in relation to different persons, circumstances or localities;
(b)
provide for the times at which and the manner in which, the charges prescribed by the scheme are to be paid;
(c)
revoke or amend any previous charging scheme;
(d)
contain incidental, consequential or transitional provision for the purposes of the scheme.