What procedure is used to categorize threats involving multiple individuals?

The procedure used to categorize threats involving multiple individuals is best identified as "Threats with Complaint." This classification is crucial as it allows law enforcement to document and assess the nature of the threat in a structured manner when multiple people are involved. Each individual's perspective or claim can significantly affect how the threat is interpreted and addressed.

This categorization ensures that comprehensive data is gathered, which aids in determining whether the situation requires immediate action or a specific type of investigation. It also helps in understanding the context and severity of the threat, facilitating better resource allocation and response strategies.

Other options do not provide an adequate framework for dealing with threats that include multiple individuals. General Threats may cover a broad range of scenarios and does not specifically address the complexity that comes with multiple complainants. Public Disturbance pertains more to disruptions in public order rather than direct threats. Vague Threats, as the name implies, lack specificity, inefficiently addressing situations where multiple individuals are involved and the nature of the threat may be more serious or defined. Therefore, "Threats with Complaint" is the correct procedure that ensures thorough assessment and response to threats involving multiple parties.