Which of the following is NOT a way how related records and actions could be used?

Creating new reports is not a way to directly use related records and actions within Salesforce automation processes. This function is typically handled through the reporting features of Salesforce, which allow users to analyze data rather than interact with or manipulate records in workflows or automation scenarios.

In contrast, the other options directly pertain to interactions with records:

Calling actions, such as sending an email alert or posting to Chatter, enables users to trigger specific automated responses based on the context of related records within a process.

Updating existing records is a fundamental part of many automation processes, allowing for the modification of records in response to certain conditions or actions taken in Salesforce.

Calling subflows indicates a process automation feature where one flow can invoke another, allowing for more complex and modular process designs. This facilitates the execution of actions across multiple related records, enhancing overall process capabilities.

Thus, the creation of new reports does not directly interact with or utilize related records and actions in the same way that the other listed options do.