CMMI should be used as the framework by which organizations and projects define the processes they follow. The model provides a set of “best practices” that enable mangers and engineering staff to more consistently and more accurately plan and perform their work so that more predictable, higher quality products and services can be developed and delivered.
From here, we cannot presume to determine precisely how your organization needs to execute the practices to meet your business objectives. It is extremely difficult to answer definitively, without seeing and understanding the business environment.
For more on implementation guidance, please also see here.