How to enter multiple tax codes

To enter the two tax codes, go to 'Utilities'/'Change Locale Settings', and next to 'Default Tax Value' click on 'Update Tax Values'. You can then enter the name of your taxes and the rate as a percentage value. Go back to the the 'Change Locale Settings' page and set your default tax (i.e the one you want to appear most of the time) then when you make a sale, on the right you will see the tax is shown. You can select a different tax type in the drop down list.