How do I assign a service tax rate so the tax is automatically added when I check out a client?

[FaceLove]

My municipality requires a service tax to be charged on our services. I want the tax to automatically be added when I check out a client. The same way it will when a client purchases an item. I have entered service tax and sales tax rates into the POS (they are different). So currently we manually add the tax at checkout but my crew (self included) don't always remember. This will cost me in the end.

[VanKalkerFarms]

when setting up the item or editing it you can assign a tax to it that will automatically be applied.

https://squareup.com/help/us/en/article/5404-create-and-manage-items-with-square-point-of-sale