I own a atv repair shop, when I order parts for a customer (multiple parts for different customers on the same invoice from vendor) what category should they be listed?

In QuickBooks Online Plus, you would do the following:

1. Setup the products and service items that you purchase and sell

2. Map the products that you purchase to a COGS (Cost of Good Sold account)

3. Map the products that you sell to an Income Account

4. Include items you that you purchase on vendor bills and expenses (PO's are optional-turn on)

5. Show items table on expense and purchase forms

6. Track expenses and items by customer (add the client name to each expense line items)

7. Make expenses and items billable to customers

8. Track quantity and price/rate

9. Track inventory quantity on hand

10. Show Product/Service column on sales forms

@braddyperformanc

I have a different outlook

When you file taxes, COGS revolves around the cost of inventory items sold, since you are not stocking the items as inventory but are ordering per customer, I would not use cogs as the expense.

I create an expense account called Cost of Sales, COS, and use that instead

If you have QBO Plus, billable expenses should be turned on in company settings.  And if you want you use a non inventory item for the parts you order, in plus if you do that you set both the purchase and sales accounts on the item and use that same item on the purchase and the sale.  If you have essentials you do not have that ability for a two sided item.

in plus, In company settings turn on make expenses and items billable
check mark to track billable expenses and items as income
then in company settings>advanced>chart of accounts click the edit pencil and select the billable expense income account

Why intuit separated the two related settings is anyone's guess

When you enter a vendor bill/CC charge/etc, you will see a Billable check mark box, check that and select the customer name in the customer block. The next time you invoice your customer, the system will show billable expenses on the right side that you can click the add link to add the bill to the invoice.  IF you do not want to add the bill to the invoice, leave the billable check mark box blank, the cost of the expense will still count against the customer

Did anyone ever answer the original question concerning inventory batch orders, but each part being for a different customer?  This sounds similar to my situation.  It cuts down on shipping costs when ordering parts once each day, per vendor.  

Do you have to match each individual part purchase with the customer invoice and also match it to the sale of the part?  Or does QB automatically know what to do.  I’m still in the preliminary planning stages of how my setup will work.