More....
--Create Group policy for Human resources OU--
-Do the same steps as above only for the Human Resources OU.
Thats all. Assuming of course that you have setup the two Start Menu redirect folder locations with the appropriate start menu items.
Whenever actUser logs on, the group policy created in the Accounting OU will be applied because the actUsers lives in the accounting OU. The Start Menu items will be setup from the redirect folder location specified for this group policy.
Same is true for the hrUser.
Note:
You can't create group policies for the built in container objects in AD (like Users, Built in, etc.. so you will need to create your own OU's for this to work.)
Also, There are probably betters ways to accomplish the same task when you are creating the group policy itself, the way I just explained happened to be the first thing I saw when looking around. However, the basic steps are the same.
Lastly, Group policies can cause serious issues if you don't understand how they work. You should play around with them on a seperate "test" environment first.
Hope it helps,
Andrew Greig, MCSE