Final answer:
Consulting with a marketing firm is not a formal step in the IMC planning process, which includes identifying the target audience, setting objectives, and determining the budget.
Step-by-step explanation:
The step that is not part of planning an Integrated Marketing Communications (IMC) campaign is 'consulting firm create communication'. While consulting with a marketing firm may be part of the process for some companies, it is not an actual step in the IMC planning process. The correct steps in planning an IMC campaign typically include identifying the target audience, setting objectives, determining the budget, and developing the marketing communication strategies.