Question on config file flags

I’m trying to install RT, and I think I messed up on my first attempt
so I want to ask this before I go on.

On the installation guide, it shows all the optional packages to add
to the config script. two of them refer to the webserver user &
group. The default is www for both, but in my case it is apache. I
suppose I need to change this…

Along the same lines, do I need to add an rt user, an rt group, a
database named rt3, a db user rt_user? Or do these get created later
during the install process? I’m pretty new at this so any help would
be extremely valuable.

thank you.

Obstacles are those frightful things you see when you take your eyes
off your goal.
-Henry Ford