I worked for a company that had a jet and a helicopter or two. All of the flights in Europe (they were based in the UK) were pretty much on the company jet. The IT guys loved it, if they had to pick up a client in Madrid, they (sometimes me if I was over there for something) would jump on for the flight to Madrid, do some stuff in the office there for the day or overnight, and fly back when they brought the client back later in the day or the next day.
It was like tiny paid vacations for them all the time, they loved it.
If with customers, the capacity was 10, if just employees, they would cover the toilet and have that be a 11th seat.