dedicated load from a central plant

Hello, We were previously unable to achieve this credit for a project receiving chilled water from a campus central plant employing 4 electric centrifugal chillers and 3 heat recovery chillers. The tonnage for these chillers was originally input as their total capacity, but we would like to reduce that tonnage to just that which is dedicated to our building (the plant serves like 20 buildings). Is it acceptable to take just our building's peak cooling load and distribute this evenly among the chillers for the "Q (tons)" variable? If so, what supporting documentation besides a load calc might be needed? Thanks.