can apply the filter to the requirement tree in caliber author
User can apply the filter to requirement tree in caliber author, use can check his interest requirment but still have the hierarchy structure.
This capability is available in Atlas 1.0 on 1/7/2014. It will work in tandem with your current Caliber projects and is available to existing Caliber users.
Edward Friedrich commented
Perhaps the filtering mechanism could be decoupled from the Requirements Grid. Then you could build a filter and select "tree view", "grid view", or even both.
Additionally, it would be cool to make a filter view saveable to the database along with the filter, instead of making it a file that is only available to the person who made it (locally on their hard drive).