Hiya, What areas or sections are you least comfortable with?
Have used any of CIMA aptitude exam test practice?
The content is quite broad and lots of reading, What helped me was picturing a large organisation and then imaging each department and function, and then listing what each department entails and duties are.
You also have variety of company types and size along with complexity, try building the diffrent structures with dimensions, but also remembering what each section (HR, Finance, IT) entails.