Final answer:
Adding sub-accounts to a main account helps in detailed tracking of finances, making it easier to manage budgets and create accurate financial statements.
Step-by-step explanation:
Adding sub-accounts allows you to track an account in more detail. This is especially useful in accounting and finance. For instance, if you have a main account for expenses, you can create sub-accounts for different types of expenses such as travel, supplies, and utilities. By doing this, you can see exactly where your money is going and can better manage your budget. It also simplifies the process of tracking expenses and revenues for reporting and ensures more accurate financial statements.