Board Thread:Support Requests - Getting Technical/@comment-35475358-20190818031402/@comment-5811199-20190818040358

You'll need to put this into your MediaWiki:Wikia.js (change Template:Foo to the template page you want to insert):

window.AddRailModule = ['Template:Foo']

There are different options you can have as well, such as placing the template at the top instead of at the bottom of the rail:

window.AddRailModule = [ {page: 'Template:Foo', prepend: true} ];