Under Administration – Finances – Bills – Options you can specify multiple sales taxes.
Under "Standard accounting area" you can set an existing billing area as the default, which will always be displayed. Simply select the desired billing area and then click on the button “Update standard accounting area”.
Under "Display settings” you can set further options for your invoices by activating the respective checkbox. However, the settings only apply to your user. The first option “Show model/item number in position” means that in the fourth step of invoice creation (more on this here) the article number is displayed next to your product. If you activate the setting “Insert last item at the top”, the last added product will always be listed at the top if there are several products (items) in your invoice.
