Cant really find information on these sort of questions on the net so can someone help me out or point me in the right direction?

In business web site design (sites that include interactivity - ASP and the like). are their specific people who manage different jobs?
Ie. Does a team or person work on the graphics while while someone else works on the content/coading?

And in what order is this generally done (if it is)...Are the graphics received and content place within them or vice versa?

Need some kind of design plan.

Any help would be greatly appreciated.