Chemistry outreach, a type of informal science education commonly practiced by college students, has primarily been studied by looking at individuals' approaches and perspectives. However, it is much more common for college students to plan and conduct chemistry outreach events as part of a group/club/chapter, not independently. In this case study, we looked at the planning and evaluation processes for a single student group conducting a chemistry outreach event. Using pre- and post-outreach event focus groups, we sought to understand how the group was structured and how they collectively planned and implemented their outreach event. Using the Framework for Effective Chemistry Communication and Communities of Practice, we identified the steps the group took to plan, implement, and evaluate their event, as well as the group's structure and member dynamics. Findings showed a misalignment between goals used to plan the outreach event, and those evaluated when reflecting on the event's success. Additionally, the Communities of Practice framework was able to highlight the membership structure underlying the group's planning process, as well as areas for growth and improvement. Overall, findings provide further support that collegiate chemistry organizations/student groups need more resources and training to successfully conduct chemistry outreach.