New unit or division of existing company, how?? process?

New UNIT or DIVISION of EXISTING COMPANY, HOW?? We have a Pvt Company dealing in AGRO based products. Want to start new unit or division dealing in sericulture (silk) under same company. Sericulture is mentioned in MOA other objects, so that's no issue. Wish to know what is the process and formalities involved in creation and starting of new unit or division of same company..... Can you guide please?? Not much matter is seen online on this matter. Your guidance will be appreciated.