What the age calculation date does
If your form limits options by age, for example race categories or age-group lessons, Zone4 works out each registrant's age from their birthdate. The Age Calculation Date is the day that age is calculated on.
If you don't set one, ages are calculated as of December 31 of the current year. That default moves forward on January 1, so a registration that stays open over New Year can start showing people different categories. If your registration runs across New Year, set the date yourself.
Set it
- Open the registration form and go to the Settings tab.
- Click More…, then Advanced Settings.
- Enter the Age Calculation Date and save.
Use whatever date your sport's age-category rules are based on. Many sports calculate ages as of a fixed December 31 so that athletes stay in the same category all season; others use the race day.
Age limits need a birthdate and a gender field
Age and gender limits on options only work if your form has both the preset Birthdate and Gender fields. If an age-limited option isn't appearing when it should, check that both are on the form. See Preset Fields.
The "show all" link
When options are limited by age, registrants see only the options that match their age, plus a link to show all of them. The link lets people register outside their own category, for example an athlete choosing to race up an age group. If someone says they can't see the category they expected, check their birthdate and your Age Calculation Date.
See Option Fields & Option Fee Fields for how to set age limits on options.