38.Section 15 sets out the roles of the local planning authority and the Secretary of State in relation to an authority's local development scheme. Every local planning authority must prepare and maintain a local development scheme specifying the documents that will be local development documents, their subject matter and area and the timetable for their preparation and revision. The local planning authority must submit their local development scheme to the Secretary of State who can direct changes to the scheme as he thinks appropriate. He can also make regulations for bringing the scheme into effect.