Hi,
Not sure which Stack you are using but if you are using integrity or Icon Stack, these can be found in the breadcrumbs area
You can enable it in Theme Options > Header > MISCELLANEOUS > Breadcrumbs
For Ethos Stack, it is found across the title
Though for Renew however it is not available. You will need to add it manually using wp actions
Try adding the code below in your child theme’s functions.php
function add_my_nav() {
$left_icon = '<i class="x-icon-arrow-left" data-x-icon-s=""></i>';
$right_icon = '<i class="x-icon-arrow-right" data-x-icon-s=""></i>';
$is_ltr = ! is_rtl();
$prev_post = get_adjacent_post( false, '', false );
$next_post = get_adjacent_post( false, '', true );
$prev_icon = ( $is_ltr ) ? $left_icon : $right_icon;
$next_icon = ( $is_ltr ) ? $right_icon : $left_icon;
if(x_is_portfolio_item()):
?>
<div class="x-nav-articles" style="clear:both;overflow:hidden;">
<?php if ( $prev_post ) : ?>
<a style="float: left;" href="<?php echo get_permalink( $prev_post ); ?>" title="<?php __( 'Previous Post', '__x__' ); ?>" class="prev">
<?php echo $prev_icon; ?> Previous Post
</a>
<?php endif; ?>
<?php if ( $next_post ) : ?>
<a style="float:right;" href="<?php echo get_permalink( $next_post ); ?>" title="<?php __( 'Next Post', '__x__' ); ?>" class="next">
Next Post <?php echo $next_icon; ?>
</a>
<?php endif; ?>
</div>
<?php
endif;
}
add_action( 'x_before_the_content_end', 'add_my_nav', 10 );
Hope that helps