This project aims to evaluate the effectiveness of CS-ADL (Cognitive Stimulation in Activities of Daily Living). CS-ADL is an occupational therapist-led, group cognitive stimulation program for people living with mild-to-moderate dementia that aims to enhance their functional performance, alongside their social and cognitive functioning. This research involves a randomised controlled trial, where the effect of CS-ADL on function, cognition, mood, communication, quality of life, and neuropsychiatric symptoms will be compared to that of a control group (treatment as usual).