to allow access to the page for a particular time frame, you will need to add hand coding around the security assist page restriction code using the php time() date() and strtotime functions.
time() will return the current time stamp (number of seconds passed since 1/1/1970 00:00:00)
strtotime("2013-02-04 08:00:00) will return the time stamp for the Feb 4, 2013 at 8am
heres an example that allow access to the site between 8am and 5pm on 2/4/2013:
php:
<? if(time() >= strtotime("2013-02-04 08:00:00) && time() <= strtotime("2013-02-04 17:00:00)) { ?>
<security assist page access code here>
<?php } ?>
