The phrase "method of operating" can be interchanged with several synonyms that highlight varying aspects of a process. Some synonyms include procedure, protocol, system, approach, technique, mode, and practice. Procedure emphasizes a step-by-step process, while protocol may emphasize a specific sequence of steps or actions. System denotes a set of related actions, while approach and technique differ in their connotations of strategy and skill, respectively. Mode refers to a particular way of operating, and practice highlights habitual or customary behavior. When choosing a synonym for "method of operating" in a given context, it is important to consider the nuance and emphasis that each brings to the table.