I'd be glad to help you determine when to use contractor and repair maintenance in QuickBooks Online (QBO).
You'd choose a contractor if you've hired a self-employed individual to provide services to your business, generally on their own terms. On the other hand, repairs and maintenance refer to costs associated with general office upkeep, including essential tasks like plumbing repairs, regular heating or air conditioning servicing, painting, gutter cleaning, and light fixture repairs.
For precise guidance on when to utilize that category, please consult with your accounting professional. If you don't have one, you can find a professional through this link: Find an Accountant.