A child theme is something like a copy of your main theme (also referred as parent theme), which inherits the look and functionality of the parent. Its main usage is so that you can test tweaks and modifications without the risk of breaking anything.
OSClass does support the usage of child themes and for their creation you have to go through a few easy steps:
<?php
/*
Theme Name: Osclass CHILD Bender Theme
Theme URI: http://www.osclass.org/
Description: This is the Osclass CHILD bender theme
Version: 1.0
Author: Osclass team
Author URI: http://www.osclass.org/
Parent Theme: bender
*/
?>
Easy as that! Your child theme is now created and ready to use.
If you need any further assistance creating your child theme you can contact us 24/7 via Live Chat and our operators will gladly help you out.