We do skip or pattern loading for beam with cantilevers, and we do skip loading for concrete beams in the concrete analysis, but for multiple-span lateral beams in the Ram Frame analysis we only analyze a single concurrent downward live load case. Using cantilevers might be an option if skip loading is critical to you, or you can process the Ram Concrete analysis to check max beam forces in that module. Alternatively you could manually alter the applied surface loads to represent the worst case pattern.
For more see: