How to integrate

Hi,

I have uploaded the plugin and also followed the steps. But I am not able to understand where the shortcode to be putted. Also if an user wants to search the posts by a specific range of date then how it can be done. For that I want to insert one select date range option but I am not able to do that also. Please guide me in these regards. Also I have attached my existing search forms code below:

=======================SEARCH FORM===========================
<?php get_header(); ?>

<?php // Get Theme Options from Database
$theme_options = courage_theme_options();
?>

<div id=”wrap” class=”clearfix”>

<section id=”content” class=”primary” role=”main”>

<?php if (have_posts()) : ?>
<h2 id=”search-title” class=”archive-title”>
<?php printf( __( ‘Search Results for: %s’, ‘courage’ ), ‘<span>’ . get_search_query() . ‘</span>’ ); ?>
</h2>

<?php while (have_posts()) : the_post();

get_template_part( ‘content’, $theme_options[‘posts_length’] );

endwhile;

courage_display_pagination();

else : ?>

<h2 id=”search-title” class=”archive-title”>
<?php printf( __( ‘Search Results for: %s’, ‘courage’ ), ‘<span>’ . get_search_query() . ‘</span>’ ); ?>
</h2>

<div class=”post”>

<div class=”entry”>
<p><?php _e(‘No matches. Please try again, or use the navigation menus to find what you search for.’, ‘courage’); ?></p>
</div>

</div>

<?php endif; ?>

</section>

<?php get_sidebar(); ?>
</div>

<?php get_footer(); ?>

===================SEARCHFORM.PHP=============================

<form role=”search” method=”get” class=”search-form” action=”<?php echo esc_url( home_url( ‘/’ ) ); ?>”>
<label>
<span class=”screen-reader-text”><?php _ex( ‘Search for:’, ‘label’, ‘courage’ ); ?></span>
<input type=”search” class=”search-field” placeholder=”<?php echo esc_attr_x( ‘Search …’, ‘placeholder’, ‘courage’ ); ?>” value=”<?php echo esc_attr( get_search_query() ); ?>” name=”s”>
</label>
<button type=”submit” class=”search-submit”>
<span class=”genericon-search”></span>
</button>
</form>

==================================================================

https://wordpress.org/plugins/ultimate-wp-query-search-filter/