The community engagement professional (CEP) plays a critical role in engaging faculty, staff, and students with communities. In order to do this in the most effective way, this essay advocates for CEPs to become familiar with the Cooperative Extension system and develop competency for engaging Extension personnel, even when those personnel are not a part of the CEP's home institution. The essay extends the work of Dostilio et al. (2017) on preliminary competencies for the community engagement professional by identifying additional competencies, organized as knowledge, skill, and dispositions, that can help CEPs work with the Cooperative Extension system to maximize engagement opportunities for faculty, staff, and students. This essay also includes ideas for implementing competency training for CEPs. Conclusions include thoughts on preparing the community engagement professional to learn and collaborate with Cooperative Extension to enrich the academic experience and benefit the communities they serve.