...
Tax VAT : VAT rate that will be used for your event. To be selected among the dropdown elements. See : Institution | Initialisation | VAT Rates
Alert ratio (%) : Percentage of availabilities left from which the competition will be considered as with limited availabilities. This will trigger the availability color used on the ticketshop (it will become Orange as soon as the level is reached) and display the Alert Quota message in the back office.
...