Note from the legal dept:
The process described and the tool provied here is not officially supported by Microsoft and are provided only as an example to the community.
Neither I nor Microsoft, nor any other person, animal, vegetable or mineral assumes responsibility for the process demonstrated here. USE AT YOUR OWN RISK!
This tool provides a way to easily hide/unhide categories in the Activities pane.
For more information, see the Orchestrator blog article:http://blogs.technet.com/b/orchestrator/archive/2012/05/08/cool-tool-hiding-unused-categories-in-the-activities-pane.aspx