A saved custom report is a definition with an owner and a sharing audience. Share it with the groups that need the report for their work. An HR roster may need HR Analysts and HR Partners, while individual compensation belongs with the compensation review audience. A broad employee group is a poor default for worker-level information.
Sharing makes the definition available; it doesn't grant permission to every data source or field inside it. Two users can run the same shared report and see different data because their domain or organization access differs. Use the smallest named audience in the request, and remove unrelated groups rather than merely adding the right one. Confirm the saved sharing configuration after the change so the audience is part of the report's end state.