This can be done just through the stylesheet. So say for example you have the following in your archive file:
<?php if (have_posts()) : while (have_posts()) : the_post(); ?>
<div class="entry-content">
Content outputting here...
</div>
<?php endwhile; ?>
<?php endif; ?>
I believe each element should be wrapped in something already, like a <div> or <article> or similar. You’ll just target that with your CSS and make it two-columns. So for the example snippet above you’d probably have some CSS like:
.archive-employees .entry-content {
float: left;
width: 50%;
}
That .archive-employees bit is whatever class is currently on the <body> element on your archive page. Might need some tweaking but that’s the general idea.
