Hi, could you please help me with a part of my business plan that I am working on for college?

Hi, could you please help me with a part of my business plan that I am working on for college? Basically, I am currently writing a business plan about a made up online college bookstore where students can sell their textbooks to other students or swap textbooks with each other. Anyway, a section of my business plan template asks the following questions:OPERATING AND CONTROL SYSTEMSAdministrative Policies, Procedures and ControlsReceiving Orders1. What administrative policies, procedures, and controls will be used for receiving orders?Billing the Customers2. What administrative policies, procedures, and controls will be used for billing the customers?Enter text here.Paying the Suppliers3. What administrative policies, procedures, and controls will be used for paying the suppliers?Enter text here.4. Collecting the Accounts ReceivableWhat administrative policies, procedures, and controls will be used for collecting the accounts receivable? Will you have a separate collection department? Use a collection agency? Use factoring?Could you please help me with any or all of the above questions? If you can only answer 1 of the questions that is good. However, of course if you can answer all of the above questions that would be great! Thank you.