The work presented in this paper is related to the area of Situational Method Engineering (SME), which focuses on project-specific method construction. We propose a generic process model supporting the integration of different existing SME approaches. This model shall help the method engineer either selecting one SME approach or combining several approaches that best fit the situation of the method engineering project at hand. The generic model presented in this paper already contains three SME techniques: (1) to assemble method chunks (2) to extend an existing method and (3) to generate a method by abstraction/instantiation of a model/meta-model. The paper presents and illustrates these three techniques and show how other SME techniques could be integrated in the model.