understanding network wizard

I have a basic knowledge of setting up a LAN but still would like to know more.
What I normally do to setup a LAN:
1)get all computers on same workgroup
2)enable file & printer sharing for microsoft networks (network adapter
properties)
3)set IP & DNS to obtain addresses automatically
4)enable sharing on specific folders that I want shared
5)enable remote assistance (only if desired since high risk)

When I share a folder for the first time on any of the computers -- a shared
documents properties window appears saying that for security reasons remote
access is disabled. If I want to enable this feature I should run the
network setup wizard.

I'd like to know exactly what else this wizard is doing that I haven't
already done?
How would I navigate to manually enable this feature?