Define actors in business process management notation

• A Pool represents a major participant in a process, such as a company or a customer. It can contain one or more lanes.

• Lanes are subdivisions within a pool, used to organize and categorize activities performed by a specific role, department, or system. For example, within a "Company" pool, you might have lanes for "Sales Department," "Customer Service," and "Warehouse."

These elements help visualize who is responsible for executing specific activities in a business process.