I am aware of the difficulty you are in, businessMan1. 

I understand how beneficial this would be for business owners like you to customize and modify purchase orders in the online program. I'd personally want this feature to be available in my QuickBooks Online account. However, this is still accessible in the Advanced version.

Please know that due to high volumes of feature requests, product engineers are carefully examining customer feedback to help improve the program and provide convenience for you and your business.

I'll be sharing this guide to help you manage your purchase orders in QuickBooks: Add purchase orders to expenses, bills, or checks in QuickBooks Online.

I appreciate your patience and understanding as we work towards improving our product. Just leave your queries below if you require additional assistance when managing QuickBooks tasks. I'll be around whenever you need help. Keep safe!