The guideline can be applied to engineering organizations which plan, create and/or commission automated machines or plants. It is intended to support engineering organizations (EO) in assessing their own current situation and to give advice for them which target status under the given constraints and conditions are desired. It is shown how the desired target status as well as costs, risks and chances are related and closely connected to the adoption of the procedure. This part of the guideline focuses on the methods that are part of the workflow in an EO. It describes the means and concepts an EO has at its disposal in all phases of a plant?s life cycle in order to fulfil certain customer requirements on the one hand and to make the engineering process as efficient as possible on the other.