Custom Homepage Template Changes Not Updating For Pages Using That Template

We currently use a Custom Layout as a template for our homepages on

If you go to the site, you can see that the first page ALL MUSTANG has the products split into categories, this change was made in the design>layout>homepage template, by adding the necessary blocks.

I am new to CScart, correct me if I am wrong here, but if I make changes to the parent template it should add those same blocks to the other pages right?

The end goal is to have each other page 2011-2014 MUSTANG, 2005-2009 MUSTANG, etc. To have those blocks on the homepage products that can be changes to different category titles within that respective year.

How can I get those additional blocks to show up on content pages that are already set up. When I go to the block tab in any of the content pages, I dont see an option to add new blocks.

Does anyone have any input?