Hi there, @BCostello.
Let me share some information about paying vendors in QuickBooks Simple Plan.
Bill payments are available for QuickBooks Online (QBO) Essentials, Plus, and Advanced plans. With these plans, you can separately enter the bills you received. Then, pay all of them at once using the Pay bills option.
For the Simple Start subscription, you can simply write a check and enter multiple expense line items that represent the bills.
You may visit our QuickBooks Plans and Pricing website to learn more about the features offered for each plan.
For more information about managing bills in QBO, you can check out this article: Enter bills and record bill payments in QuickBooks Online.
Don't hesitate to leave a reply if you have additional questions about paying vendors in QuickBooks. The Community team is here to lend a hand. Take care.