I've created a Discussion List, with a choice column where users must specify either Internal or External (our discussions will either cover internal or external issues).
When my users search, they will specify whether they're looking through internal or external discussions. This will cut down loads of unhelpful results.
I know I can create a Search Vertical to specify things like content types or source locations.
I know I can create a filter for a list view.
But how do I/should I create a search vertical option for them to search through internal or external discussions? Or should I be taking another approach? Should I create a page with a custom search box, with a Refinement webpart below it?
Many thanks! Matthew