Using minicalendar for custom fields in the lightbox

I am wondering how to use the mini calendar for a custom field like date of birth in a lightbox. Otherwise, how can I integrate a datepicker for a date field in the lightbox.


You can use minicalendar to set birthday date in case if you haven’t control with start/end dates of this event in the lightbox.
If you have - then you need to create new control with integrated datepicker, for example jQuery Datepicker.