Which of the following options would enhance the capabilities of searches in a role?

Adjusting search filters enhances the capabilities of searches within a role by allowing more granularity and precision in the search process. Search filters can refine the results returned by a query, ensuring that users can focus on the most relevant data according to specific criteria. This capability is essential for roles that require detailed analysis of logs and events because it empowers users to fine-tune their searches based on time, source types, index, and other attributes.

By modifying search filters, users can efficiently sift through large datasets, thus improving performance and yielding more accurate results. This enhanced capability not only allows for a better investigation of issues but also improves the overall experience and effectiveness of the users in their data analysis tasks.

The other options relate to aspects of data management and access control that do not directly enhance search capabilities. While they might be important for other operational considerations, they do not improve how searches are conducted or the relevancy of their results.