7.—(1) A person with power to make arrangements under this regulation may make arrangements with another local authority in accordance with this regulation.
(2) Arrangements under this regulation may provide —
(a)for a function which is the responsibility of the executive of one local authority to be discharged either by another local authority or by the executive of that other authority if that function is a function of that other local authority but is not one which is the responsibility of the executive of that other local authority;
(b)for a function which is the responsibility of the executive of one local authority to be discharged by the executive of another local authority if that function is a function which is the responsibility of the executive of that other local authority;
(c)for a function which is the responsibility of the executive of one local authority to be discharged by the executive of another local authority if that function is not a function of that other local authority and that other authority has an executive;
(d)for a function which is the responsibility of the executive of one local authority to be discharged by another local authority if that function is not a function of that other local authority and that other authority does not have an executive.
(3) Any arrangements made under this regulation are not to prevent the person who made the arrangements from exercising the functions to which they relate.