How do you change the naming of process groups in Dynatrace?

The process group naming rules provide a systematic approach to change the naming of process groups in Dynatrace. By utilizing these rules, users can define patterns and criteria for naming process groups based on specific attributes like tags, host names, or specific metadata associated with a service. This ensures consistency and makes it easier to manage and identify different process groups across various environments.

The other methods suggested, such as modifying application settings or directly editing source code, do not offer a structured way to handle naming conventions for process groups. Additionally, relying solely on the user interface may limit flexibility and the ability to implement dynamic naming strategies that are possible with naming rules. Therefore, using the process group naming rules is the correct and most effective approach.