What is the correct way to represent multi-split VRF?

HI - I am new to this community and software while training up to be a Level 5 LCEA in the UK. It is my understanding that I should now select split or multisplit system with natural ventilation and specify the appropriate SPF where mechanical ventilation is used in any given zone? Is there a step-by-step method I can follow to ensure the engineers design is correctly represented? Many thanks