service as item and creating a vendor payable

Welcome to the QuickBooks Community, mclark70! It is nice to see you here. I will be happy to share some information. You would need to create the customer invoice first, then go to the Vendors menu to generate each bill, entering the specific item and cost for that vendor and marking it as billable to the customer. Here's how to create the vendors' bills: 

1. Go to the Vendors menu and select Enter Bills.
2. From the Vendor drop-down menu, select the first vendor.
3. Enter the bill date, due date, and bill number.
4. Go to the Item Details tab and select the service item that this vendor supplied.
5. Click the Billable checkbox for that item and select the customer you are billing.
6. Add the cost from the original invoice for this vendor's service.
7. Click Save & Close. 
8. Repeat the same steps for the second vendor.
    

Please let me know if you have additional questions or need clarification. My team and I are here to help! See you around.