You can add the consumables charge as another line item after the labour subtotal, jfyr777. Let me show you how.
If you haven't created an item to track the consumable charge, let's make one, so we can add it as another line item after the labour subtotal in an invoice. Follow the steps below:
Go to the Sales menu and select Products & services.
Click the New button and choose Service as the item type.
Enter a Name (Consumables Charge) and the necessary info, then Save and close.
Go to the +New button and select Invoice under the Customers column.
On the Product or service section, select Labour first.
Hit the Add product or service dropdown menu to Add subtotal.
Pick the Consumable Charge, then Save.
On the other hand, you can create a Bundle item if you're referring to inserting the consumables charge directly after the labour total.