Here is a really cool feature of OpsMgr: the ability to create groups easily based on any discovered attribute of an object.
OU is something that is part of the Windows Computer object discovery. If you examine a state view – you will see in the details pane discovered information… and OU is there. Typically this means we can likely use that object (Windows Computer) and OU will be a discovered attribute of that.
This also means is we personalize a Windows Computer based state view – we can add OU:
To use a grouping, create a group, add Windows Computer object, and then a rule based on OU:
A right click – view group members reveals: