How do I make an answer require or rule out certain results?

Question

Accepted Answer

Weighted, Required to include and Required to avoid.
Each feature weight on an answer has a Matching rule:
• Weighted: adds to the score (the usual choice).
• Required to include: when chosen, only results that have this feature (with a positive result weight) stay in the list.
• Required to avoid: when chosen, results that have this feature are removed.
Required rules filter but add no points. If every result is removed, people see “No applicable results remain”, so use them for true deal breakers such as allergies or budget limits.