Specify particular caldender dates only for selection

Question

I run a class every thursday, id like my visitors to be able book on future thursdays only. Is there a day to do this via the date field? So it only allows them to select a future thursday

Answer 1

On your date field, enable Show Custom Error, When, and use this calculation.

=(DateField.DayOfWeek != "Thursday") or (DateField < DateTime.Today)

Remember to add a custom error message.