After plugin activation, Under Appearance > Widgets all the available widget will have extended options at the bottom.
Days / Dates Tab
Best option if you are running deals and promotion. Make the widget visible for specific days and/or date range.
Hide/Show - Choose if you want to hide or show the widget on the checked days or added date range.
Days - Apply the selected show/hide to the checked days.
From - Show or Hide Widget start date.
To - Show or Hide Widget end date.