in the top of the Template you can see these lines of code:
Now you should add below for example:* Showing the Header Sliders *}
{capture assign='cfirst'}{content block='First Teaser Title Attribute' wysiwyg="false" oneline="true"}{/capture}
{capture assign='tfirst'}{content_image block='First Teaser' dir='BizBuzz/teaser' urlonly='true'}{/capture}
{capture assign='csecond'}{content block='Second Teaser Title Attribute' wysiwyg="false" oneline="true"}{/capture}
{capture assign='tsecond'}{content_image block='Second Teaser' dir='BizBuzz/teaser' urlonly='true'}{/capture}
{capture assign='cthird'}{content block='Third Teaser Title Attribute' wysiwyg="false" oneline="true"}{/capture}
{capture assign='tthird'}{content_image block='Third Teaser' dir='BizBuzz/teaser' urlonly='true'}{/capture}
On line 73 you can find the Slider part:{capture assign='cfourth'}{content block='Fourth Teaser Title Attribute' wysiwyg="false" oneline="true"}{/capture}
{capture assign='tfourth'}{content_image block='Fourth Teaser' dir='BizBuzz/teaser' urlonly='true'}{/capture}
Now add there your additional images as above use what you assigned:
{if ($cfirst)&&($tfirst)}
{elseif ($tfirst)}{/if}
{if ($csecond)&&($tsecond)}
{elseif ($tsecond)}{/if}
{if ($cthird)&&($tthird)}
{elseif ($tthird)}{/if}
Thats all.{if ($cfourth)&&($tfourth)}
{elseif ($tfourth)}{/if}
The easier way would be using ScriptDeploy and Gallery module for the slide, but i couldn't include the module in Template :)
For Example (didn't test this but it should be something like this) for the Gallery template, you don't need to include any js or css there since it's all in the template:
And in Tempalte where you simply place {Gallery dir='yourdir'} and to that Directory/Subgallery you assign the template that was created.{foreach from=$images item=image}
{supersizer path=$image->file|rawurldecode width=950 height=245 crop="center,center" alt=$image->titlename}{/foreach}