How do I add/remove a Tax to/from a Service?
You must first create the Tax. See: How do I add a new Tax?
To add / remove a Tax to / from a Service, choose Manage > Services > List
Click the Edit icon against the Service name
Click on the Taxes tab
A list of existing Taxes will appear
Select the checkbox against the relevant Tax to add the Tax
It is possible to add multiple Taxes
Deselect the checkbox against the relevant Tax to remove the Tax