Is it possible for it to show more than one category?

Well, I tried editing the plugin myself, but to no avail.

I think it might be somewhere here:

<select name="wp_skitter_category" id="wp_skitter_category">
							<option value="">Select a Category</option>
							<?php 

							$category = get_option('wp_skitter_category');
							$categories=  get_categories(); 

							foreach ($categories as $cat)
							{
								$option = '<option value="'.$cat->term_id.'"';
								if ($category == $cat->term_id) $option .= ' selected="selected">';
								else { $option .= '>'; }
								$option .= $cat->cat_name;
								$option .= ' ('.$cat->category_count.')';
								$option .= '</option>';
								echo $option;
							}

Is it actually possible to edit it so the slideshow can show more than one category?

Thanks a lot in advance.

https://www.ads-software.com/extend/plugins/wp-skitter-slideshow/