In adult day care settings, occupational therapists play a unique role in providing individuals with dementia opportunities to engage in occupations. This project aims to address the occupational engagement of guests with dementia at an adult day center using a cognitive-based approach to activity design. Twelve individuals at an adult day center with a formal diagnosis of dementia participated in the Allen Cognitive Level Screen (ACLS), and the individuals and their caregivers completed an interest checklist. The activity binder created considered the results of the ACLS and interest checklist. Due to staffing issues, only one staff member completed all training on how to facilitate group activities using the activity binder. I observed a staff member facilitating activities and assessed the engagement levels of the individuals with dementia using the Group Observational Measurement of Engagement (GOME). Average engagement scores in three activities ranged from 2.875 to 3.25 out of 4. Staff knowledge and confidence were also measured before and after training using a survey. The staff member improved from 25 points to 30 points. Additionally, staff satisfaction was also measured using a survey. The staff member scored each item on the survey as a 5 “very satisfied”. The present research study found that utilizing a cognitive-based approach to activity design allowed individuals at a day center to engage at a higher level in group activities; moreover, providing staff with adequate training materials improved confidence and knowledge.