[support] Drupal 7 work flows

[Roger]

Can someone point me to a tut on workflows for Drupal 7.
I've got a situation where content has to be approved depending on the 
originator of the content.
There are about 10 coordinators who input their own regional data and 10 
regional approvers, one for each coordinator there is no interchange 
between coordinators and or approvers.

I haven't yet found a way of doing this is in D7...Frustrating..
Thanks in advance
Roger