I would like to include links for each image
Also change the image
I do not know how to change footer.php
Can you help me please

http://prntscr.com/f6477p

@fabio
In file oc-content/themes/veronika/footer.php

Following code needs to be changed:
      <?php 
        $partner_path = osc_base_path() . 'oc-content/themes/' . osc_current_web_theme() . '/images/partner-logos'; 
        $partner_url = osc_base_url() . 'oc-content/themes/' . osc_current_web_theme() . '/images/partner-logos'; 
        $partner_images = scandir($partner_path);

        if(isset($partner_images) && !empty($partner_images) && $partner_images <> '') {
          foreach($partner_images as $img) {
            $ext = strtolower(pathinfo($partner_path . '/' . $img, PATHINFO_EXTENSION));
            $allowed_ext = array('png', 'jpg', 'jpeg', 'gif');

            if(in_array($ext, $allowed_ext)) {
              echo '<img class="partner-image" src="' . $partner_url . '/' . $img . '" alt="' . __('Our partner logo', 'veronika') . '" />';
            }
          }
        }
      ?>
to something like this:
<a href="http://www.your_url.com"><img class="partner-image" src="http://www.your_url.com/my_image.jpg" /></a>

you need to define it for each logo image and change link in href and src tags.

But where I must enter the code:
<a href="http://www.your_url.com"> <img class = "partner-image" src = "http://www.your_url.com/my_image.jpg" /> </a>

@fabio
In footer instead of first part of code I have posted in previous post (starting with <?php, ending with ?>)