That common areas, including open spaces, natural resource protection areas or recreational grounds, shall be for the sole benefit, use and enjoyment of the lot or unit owners, present and future, of the entire planned residential development or that the common areas may also be used by residents outside the planned residential development. If residents outside the planned residential development are permitted to use the common areas, the indenture shall contain provisions, which shall provide, in essence, the following:
a. No resident of the planned residential development shall be denied the use of the open space, natural resource protection areas, recreational facilities or other common ground for any reason related to the extension of such privilege to non-residents of the planned residential development;
b. At any time after the recording of the indenture, a majority of the residents of the planned residential development, by election duly called, may elect to allow or disallow usage of the open space, natural resource protection areas, recreational facilities or other common grounds by non-residents of the planned residential development.