Whilst there will be 3 main sections, the requirements within each section may require you to complete sub-sections for each as you progress. So for example on the CIMA Pilot Exam, given to students prior to the first exam, every one of the examiner's solutions included two main sub-sections to be done within the overall time for that section. So, for instance if the first task had an hour time limit, two sub-sections would needed to have been done in that time.

No timing guidelines will be given for sub-sections so you will need to manage your time effectively for those, estimating how important each section is and how much time you will allocate to them.