Planned developments shall be permitted in certain districts as shown in Schedule A.[1] Approval of planned developments shall be pursuant to subdivision and site plan applications pursuant to Article VI. The standards governing the type and density, or intensity of land use, in a planned development shall be as provided in this section and Articles VI, VII and VIII. The density or intensity of land use otherwise allowable in a particular district may not be appropriate for planned development. The Planning Board may vary the type and density, or intensity of land use, otherwise applicable to the land within a planned development in consideration of the amount, location and proposed use of open space; the location and physical characteristics of the site of the proposed planned development, and the location, design and type of dwelling units and other uses. Clustering of development between noncontiguous parcels shall be permitted and, in order to encourage the flexibility of density, intensity of land uses, design and type, authorize a deviation in various clusters from the density, or intensity of use, established for an entire planned development.