Users can set the availability of a Resource file or folder to display to site participants at a specific date and time and become hidden at a specific date and time.
Select the Resources tool from the Tool Menu of your site.
To set specific availability of a file or folder, to the right of the file or folder, from the Actions drop-down menu, select Edit Details..
This displays the Edit Details page for the item.
Under Availability and Access, check the boxes next to From and Until, set the dates and times using the calendar icon, then click Update.
This displays the file or folder in Resources as hidden, except during the specified time period.