Crew/Passenger weight calculations are statutory.
All the junk food that is being consumed is causing headaches in the airline industry. Average passenger weights and average mass of passenger is increasing so that rows of seats are being removed to ensure aircraft performance is achieved.
So the helicopter industry is in the same calamity. Fat and overweight people will want to hire you for a flight. If that/those persons are over/above the limit set by the maker then you cant take them. Bust. The insurance would be invalidated if you did.
Tell the fat ******s to eat less and take exercise and come back when they are 'within limits'.
You also need to weigh the bags that you carry. They also have their limits set by the loading plan in the baggage area. JetRanger and Agusta can easily be out of baggage space/floor limits.
Laptops and the other associated IT items can run up a hefty lump.
Don't fly out of limits - OK!