The scenario I have in mind is sitting waiting for a passenger to get on or
off, or helping a passenger get on or off. It's mainly just to have a more
realistic simulation. The aircraft I use in the sim is usually a Baron 58; if

I just don't understand it, why do you need to go to such great
lengths in a simulator? Even in real life its the flying part that is
the most fun, the challenge to level off precisely and accurately with
the minimum of fuss, the thrill of taking off and landing within 100
ft of the numbers, handling stiff X-winds, using only pilotage to get
to a small airstrip etc. Of course taxing is fun too but its only
because of what comes after it or what came before it.

I fly it online (VATSIM), it's important that stops at airports be of
realistic length (of the length that they would be if you stopped for some
specific purpose in real life, such as picking someone up or dropping someone
off).

If I were to fly in a simulator the only thing I would be doing would
be to fly, fly, fly and never do the mundane things like taxing and
especially never do something as silly as simulating waiting for a
passenger. I don't see why you do not go up with a flight instructor
for an hour or so if you are so interested in the real life aspects of
flying. Its like the saying that a picture is worth a thousand words,
similarly one real flight can be worth a thousand simulator flights.
It would save you a heck of a lot of time not having to ask these
questions and time is money.