Calendar

[Bryan]

Hi there, is it possible to disable certain date in the calendar that create by a column type date and time ?
If yes, can you please provide the details/ways on how to do it?

[Dmitry Kozlov]

You can configure a custom validation for the column. Please, go to the List settings, open the column settings, and expand Column Validation section. Next, insert the following formula into the textarea:

=DateTime<>DATE(2015,4,28)

Replace DateTime with the name of your date field.