ITNinja

Hey guys- I am a first time ITNinja user and brand new to the KBOX!  I have a question about software deployments.  We have a situation in our environment where we can not run the latest version of Firefox.  We must stay on 29.0.1- so we created a managed install for Firefox 29.0.1 and an un-installer for Firefox 30.  So the labels applied to both the installer and then in-installer are Win 7 laptop and Win 7 desktop labels.  That includes everyone on the domain.  I would like to exclude just 2 users from the install and un-install and let them run version 30.0.  I have created a new label for that.  Is there any way to add exclusions?  I am curious because they currently would fall under 2 labels, would it know to read over the one label?  Thanks so much!