Need to add some code but do not know where

[Diablotic]

I have received following instructions in order to add link exchange script but I do not know how to add it to vB:

1. Add this code to your script (in bootstrap or in each php file):

<?php include_once('prolink.php'); ?>

2. Add this code to your template (under menu or in footer)

<?php prolink_getLinks(); ?>

Point 2 is easy, I will add it to the footer or something but what do I do with number 1?