hey there
i was trying to do some research for you on the theme’s forum and i hit a paywall, do you have an elegant themes account? if so i ask that you post over in their support forum for the chameleon theme here as supporting commercial themes is beyond the scope of this forum
anyway, all that being said, do you already have a child theme? not not a tool like the child theme configurator may be handy as it will allow you to continue to get theme updates while preserving your customizations
in the twenty-fifteen theme, is would be on lines 39 to 42 this section:
$description = get_bloginfo( 'description', 'display' );
if ( $description || is_customize_preview() ) : ?>
<p class="site-description"><?php echo $description; ?></p>
<?php endif;
if you can find a similar reference in your theme files, copy that file to your child theme folder and make your edits
good luck!