Filter Search Results in Communities
Where: This feature is available in Lightning communities, accessed through Lightning Experience and Salesforce Classic, and is available in Essentials, Enterprise, Performance, Unlimited, and Developer editions.
How: Search filtering for communities is on by default in your Salesforce org. From Setup, in the Object Manager, go to Search Layouts for each object you want to filter. Add the fields that users want to filter to the Search Results layout. Supported field types are checkbox, phone number, picklist, text, and URL. You can’t filter encrypted fields.
Once you’ve set up search filtering on an object-by-object basis, you can enable it on a community-by-community basis. Select the Allow search result filtering checkbox in a community’s Global Search Results component properties.
Then, your community members can narrow search results by selecting a supported object on the left side of the search results page and then applying filters.