No screenshots are really needed.
Say for example you want to add a box of images - and - you want to have specific text for a specific style in your footer.
You can add your box of images in $vbtpldw_01 and your specific text in $vbtpldw_02 and only include those two variables where you need them in your footer.
Code:
$ad_location[ad_footer_start]
$vbtpldw_01
$vbtpldw_02
<br />
$spacer_close
Say as an additional example, your second style has something you want similar, but rather than putting the text in there, add what you want to $vbtpldw_03 and just put the variable in the second style's footer.
Code:
$ad_location[ad_footer_start]
$vbtpldw_01
$vbtpldw_03
<br />
$spacer_close
Btw, this isn't far from what I have on my own site. I'm using $vbtpldw_02 on my site rather than 01 and 02 or 01 and 03.
I am not using 01 on my site currently as I have other footer information in there and have that "not in play" at the moment.
Hope that helps