Yoast Breadcrumbs Plugin

It says you need to enter this code in your theme’s template:

<?php if ( function_exists(‘yoast_breadcrumb’) ) {
yoast_breadcrumb(‘<p id=”breadcrumbs”>’,'</p>’);
} ?>

Where do I put it?

I placed it in index.php but that can’t be right because it showed up on the home page as well, and the plugin says it only shows up on individual posts/pages.