Need Help Crafting a 5-Year Manpower Plan for My New Job – Any Advice or Frameworks?

Dear seniors, I joined a registrar company about 4 months ago and have been asked to come up with a 5-year manpower plan. Please, I need your advice, framework, and anything that could help me complete this task.

Thank you,
Regards

Could you provide more details about your company, such as the current strength, activities, whether it is publicly listed, office location (single or multiple), number of departments, etc.?

Also, please confirm if you have discussed this issue with any of the Departmental Heads. Their peripheral involvement will be necessary for you to develop the 5-year Manpower Plan.

Regards,
TS