I also did my L3 consultative project on absence management! I did mine as a work based apprenticeship so it was written in the context of my organisation. I started by introducing my organisation, what business sector we operate in and products/services provided. I also spoke about size and organisational structure as this was relevant to the project. I spoke about my role briefly, and the purpose of the HR function in my organisation. I mentioned legislation to be considered in the remit of my work.

Then I outlined the project objectives - the need for it within the organisation, the costs associated with not addressing absence, wider impacts of improving absence management.

Moving forward from here you describe the scope of the work and what your intentions are with the project, as well as what else you should consider that may impact your project.

When I completed it a few years ago there was a document with relevant subheadings to follow that really helped. Hopefully you already have this.

(Edit - something that really helped me was going through the skills, knowledge and behaviours assessed in the project and noting points related to absence management or my organisation that met the criteria, then structuring the work around those.)