How do joint-stock enterprises use three companies to make financial planning?

For a company, financial planning should be divided into three parts, the first is to predict the company's future financial needs and how much money it needs, the second is to prepare the financial budget and how much money we need to prepare to meet the company's needs, and finally, to establish financial control rules to control the company's needs and budgets. Simply put, it is how much to spend, how much to prepare, how to control and spend money.