(a)   One parking area may contain required spaces for several different uses, but except as otherwise provided in this chapter, the required space assigned to one use may not be credited to any other use.
   (b)   To the extent that developments that wish to make joint use of the same parking spaces operate at different times, the same spaces may be credited to both uses. For example, if a parking lot is used in connection with an office building on Monday through Friday but is generally ninety (90%) percent vacant on weekends, another development that operates only on weekends could be credited with ninety (90) percent of the spaces on that lot.
   (c)   If the joint use of the same parking spaces for two or more principal uses involves satellite parking spaces, then the provisions of the Satellite Parking Section 1139.09 are also applicable.