When dealing with mixed occupancy qualifications for a structure in general what does the Life Safety Code say?

In general, each type of occupancy must meet all of the criteria for its type. For example, a residential board and care facility would meet specific requirements for the "residence and board" areas, perhaps "educational" requirements for a classroom, and "assembly occupancy" requirements for a main "meeting hall". The code includes tables listing which occupancies are not allowed within the same structure and how much fire separation is required between those that are allowed (e.g., 2 hour fire walls on classroom in a residential boarding facility).