check ur plugins section then click on configure
PLUGIN SETUP
All themes bought at OsclassPoint.com has already plugin pre-integrated, however for themes from other authors modifications may be required. Make favorite button Code must be entered inside item-loop.php or inside while(osc_has_items()) { ... } loop:
<?php echo fi_make_favorite(); ?>
Show items in current list Show listings that are in currently selected user's favorite list. Code can be placed anywhere:
<?php fi_list_items(); ?>
Block with most favorited listings Show list of most favorited listings on your site. Code can be placed anywhere:
<?php fi_most_favorited_items(); ?>