Flow: Focus On A Path

A Flow visualization can get a little difficult to handle after the user switches from one dimension to another.

One dimension:

Very clean and aligned with what I clicked. Page Type = Product Details is expanded into all the next Page Types.

But as soon as I switch dimensions in the right-most column to Product (to analyze what products were being accessed), I get into trouble:

Each value that was shown in the Page Type column is now expanded into the Product dimension column: Product Details, Department, Search Results, Shopping Cart, and Home. To continue my analysis, I have to click everything but Product Details.

I'd love to be able to right-click on one of the values in Page Type to focus on paths that go through that Product Details item only: