Why does the silverstripe CMS demo show a select box on top of

http://demo.silverstripe.com/admin/payables/

And how is this done?

I always get tabs on top of the modeladmin defined in $managed_models.

add the following to your ModelAdmin...

public function SearchClassSelector() {return "dropdown";}

you could go to town and edit/override cms\templates\Includes\ModelAdmin_left.ss

<% if SearchClassSelector = fixeddropdown %> 
   <p id="ModelClassSelector"> 
      <select size=$getModelForms.TotalItems style="font-size:14px; width: 250px; overflow:none" scrollbars="none"   > 
         <% control ModelForms %> 
            <option style="font-size:14px;" value="{$Form.Name}_$ClassName">$Title</option> 
         <% end_control %> 
       </select> 
    </p> 
 <% end_if %> 

then use...

public function SearchClassSelector() {return "fixeddropdown";}

Hi swaiba,

Thanks for the tips. It works!
Is there a place where things like this are documented?

I had opened a ticket to suggest them, and I do every so often consider finally releasing a module of model admin improvements...