This tutorial explains how to set your home page in the forums breadcrumbs.
NOTE: This tutorial is only for phpBB3.
Firstly login to your forums administrator panel and to go Styles -> Templates -> Click on the Edit link right next to the template that is currently in use -> Select breadcrumbs.html from the drop down menu.
Now find the code:
You need to insert some code so it should look like this:
Of-course you need to change YourWebSite.com with the domain name of your website.
Once this is done click on the Submit button and it’s done!