The filter panel consists of a filter named Issues. You can customize the Category under Issues to search for content items efficiently. By default, two categories are present, "All Categories" and "Localization". You can add more issue categories in the BlueprintIssueCategories properties file. Those categories will then be available in the category dropdown in Studio. Note however, that issue categories must contain only alphabets and not consist of any special characters.

If you are adding more issue categories, you will have to configure the validators accordingly. For more details on configuration of validators, you can refer Section 9.21.1.3, “Custom Validators”