When you run an ad hoc analysis you can hide and show partial paths.
Procedure
Run the ad hoc analysis automatically.
Click Hidden paths in the bar panel if the Hidden paths bar is not activated yet.
Select the items you want to hide.
Click Hide in the Start tab bar.
All partial paths with the selected items are hidden and listed in the Hidden paths bar.
You can show hidden paths again at any time by enabling the check boxes of the hidden
paths and clicking Show.