You can set up a service as an unmanaged item with a charge rate. You can ignore stock levels on unmanaged items.
Have a look at similar frequently asked questions or visit our FAQs page for more information
How do I add a note to an appointment?
How can I apply discounts?
How do I do a stock take or stock valuation?
How can I store Tracking Category details in TidyStock-> Customers if they don’t sync automatically?
Is a packing slip the same as a delivery note?