This study describes the design of the process evaluation of a collaborative effort among community partners to address health issues in central Oklahoma. The design is an application of a sound process evaluation planning framework that integrates the components of context, reach, dose delivered, dose received, fidelity, implementation, recruitment, barriers, and maintenance. The planning framework also provides guidance regarding the steps of designing and implementing the process evaluation. This planning process was conducted by utilizing a participatory research approach. At the end of the planning phase, the evaluation team accomplished the following: (a) development of an evaluation plan, (b) development of evaluation instruments (i.e., surveys, interview guides, observation forms), and (c) development of evaluation questions and process objectives. The information derived from this study can be valuable to practitioners and researchers involved in the planning of community partnerships or coalitions and interested in process evaluation that takes place in community settings.