You would need to make edits to the theme template files. That may be a complex task or a simple one, depending on the theme. The basic structure of an archive post loop looks like this (the wp_query to find the posts is usually done away from the archive template, so assume it is already done):
<?php
if ( $query->have_posts() ) {
// do anything here that will appear before the actual posts, like pagination,number of results, etc.
while ($query->have_posts()) {
$query->the_post();
// output each post with whatever HTML and content you need
}
// do anything here that will appear before the actual posts, like pagination,number of results, etc.
} else {
echo "No Results Found";
}
?>
I have added the part that would show a message. You could make it better by adding HTML etc.
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