I suppose, the time you appoint the employees of those departments, you check carefully that they know the theory and have some experience. So, presumably they know what and how to do. Now come the big issue of the proper structuring, organization, motivating, etc.
I would propose the following - you put a screen in their room, showing:
- weekly sales target
- up-to-date results
- monthly target
- percentage done
- marketing and PR budget cost
- up-to-date spent
And leave them decide how to work and what to do.
all the best
Val