When demised premises are situated in a larger plot of land held by the immediate lessor out of which other leases have been granted, provision will usually be made for the use of those common parts. They might be a shared entrance hall, an area for the stage of bins, for recreation or parking spaces. So that good order might be maintained, provision will be made as to the basis upon which any given lessee might use those areas. Often it will be the lease itself which governs the use. Sometimes, there will be a separate agreement, independent of the lease albeit that the status as lessee will give the entitlement to enter into it. In each case, however, it will be necessary to interpret the lease or agreement to determine the nature of the right