The next most important task after defining the process steps is allocating them to the people in the organization in order to ensure their execution. Several process roles are needed to support each process step. This information can be presented in a nice and structured way by using a RACI Matrix.
There should always be a reason why certain processes exist in a company and others do not. The justification lies in the business goals the company has set for itself to achieve. When these goals change, the processes have to change as well.