How to suggest tags in DW Question & Answer

To display tag as drop downlist like categories in ask question, go to your theme folder and create a new folder , named it "dwqa-templates" .
Inside your new folder, create a new file: “question-submit-form.php”.
Now, open up the new file in notepad or any code editor, and copy/paste the code at this link:
URL: http://snippi.com/s/j48zs9y
Finally, add the following code to the functions.php file.

add_filter('dwqa_ask_form_tag_output','dwqa_ask_form_tag_output',10,1);

function dwqa_ask_form_tag_output($output){

 $args=array(

 'orderby' => 'count',

 'order' => 'DESC',

 'hide_empty' => false,

 );

 $tag_terms=get_terms('dwqa-question_tag', $args ) ;

 $output='<select name="question-tag" id="question-tag" class="postform">';

 $output.='<option value="">Select question Tags</option>';

 foreach($tag_terms as $tag_term)

 $output.='<option value="'.$tag_term->name.'">'.$tag_term->name.'</option>';

 $output.='</select>';

 return $output;

}

Hope this helps