Webix calendar and indian currency

Hi,
I am using webix calendar in my code,I just wanted to know how to disable dates(previous dates) in calendar from current date.
Is there any option to use Indian currency in Webix.Please do suggest a solution ASAP.

What do you mean by “disable” - do you want to mark them visually or prevent the date selection outside of allowed range ?

Should not be allowed to select those dates(past date from current date).