From Calendar > Tariff Scheme
Select the relevant/Default Scheme and click on Edit Scheme
You may optionally rename the Default Scheme
Set the Tax Rounding and the Maximum Bookable Days > Save Changes
Optionally: Click on Edit Default Scheme and choose a Season that will become the ‘Fill All’ season (normally Off Peak or Low)
Save Changes
Select the Seasons from the drop-down list so that they display in priority* order
Save Changes
* priority is normally from most expensive to least expensive