Blogger
By default the Total theme doesn’t include a double sidebars layout because it can create conflicts with built-in layout and site width settings. If the theme had the double sidebars layout it would take away from other functionalities the theme currently offers. That said, Total has a lot of great built-in functions that will allow you to add the double sidebars functionality if wanted!
Sidebars hold contextual elements to the content or the whole of the website, like navigational menus, search forms, or subscription widgets. They may also hold non-contextual elements like advertisements or "daily quotes". They're almost always narrower than the content section to emphasize that the content is more important than the sidebar. Their main purpose is to help the visitor to understand and navigate the website better.

How To Add Fixed Sidebar In Blogger -
Left Side Bar (Fixed)
<style>
.sidenav5 {
  width: 120px;
  position: fixed;
  top: 205px;
  z-index:1;
  overflow:hidden;
  left:0;
  background:
  padding: 8px 0;
}
</style>

HTML CODE:
<div class="sidenav5">
Your Content here
</div> 


Customize:
top:  ( you can change according to your page )
background: ( it's not necessary )
width: 120px;  (change according to your page) 

Right Side Bar (Fixed)
<style>
.sidenav4 {
  width: 120px;
  position: fixed;
  top: 270px;
  z-index:1;
  overflow:hidden;
  right:0;
  background: #eee;
  padding: 8px 0;
}
</style>

<div class="sidenav4">
Your Content here
</div>

Customize:
top:  ( you can change according to your page )
background: ( it's not necessary )
width: 120px;  (change according to your page)