How to change post navigation based on category

Hello, I want to change the navigation link that your theme provides to go to next/previous posts within the same category. I am not adept at php, and would need some help. The code below is the default in loop-meta.php in the parent folder Unos. I am using Unos Glow children theme.

/**
 * If viewing a single post/page
 */
elseif ( is_singular() ) :

	if ( have_posts() ) :

		// Begins the loop through found posts, and load the post data.
		while ( have_posts() ) : the_post();

			$display_title = apply_filters( 'unos_loop_meta_display_title', '', 'singular' );
			if ( $display_title !== 'hide' ) :

				// Display Featured Image in header if present (static/parallax)
				$wrap_attr = hoot_data( 'loop-meta-wrap' );
				hoot_unset_data( 'loop-meta-wrap' );
				?>

				<div <?php hoot_attr( 'loop-meta-wrap', 'singular', $wrap_attr ); ?>>
					<div class="hgrid">

						<div <?php hoot_attr( 'loop-meta', '', 'hgrid-span-12' ); ?>>
							<div class="entry-header">

								<?php
								global $post;
								$pretitle = ( !isset( $post->post_parent ) || empty( $post->post_parent ) ) ? '' : '<span class="loop-pretitle">' . get_the_title( $post->post_parent ) . ' &raquo; </span>';
								$pretitle = apply_filters( 'unos_singular_loop_pretitle', $pretitle );
								?>
								<h1 <?php hoot_attr( 'loop-title' ); ?>><?php the_title( $pretitle ); ?></h1>

								<?php
								$hide_meta_info = apply_filters( 'unos_hide_meta', false, 'top' );
								if ( !$hide_meta_info && function_exists( 'is_bbpress' ) && is_bbpress() ):
									if ( bbp_is_single_forum() ) {
										?><div <?php hoot_attr( 'loop-description' ); ?>><?php
											bbp_forum_content();
										?></div><!-- .loop-description --><?php
									};
								elseif ( !$hide_meta_info && 'top' == hoot_get_mod( 'post_meta_location' ) && !is_attachment() ):
									$metarray = ( is_page() ) ? hoot_get_mod('page_meta') : hoot_get_mod('post_meta');
									if ( hoot_meta_info( $metarray, 'loop-meta', true ) ) :
										?><div <?php hoot_attr( 'loop-description' ); ?>><?php
											hoot_display_meta_info( $metarray, 'loop-meta' );
										?></div><!-- .loop-description --><?php
									endif;
								endif;
								?>

							</div><!-- .entry-header -->
						</div><!-- .loop-meta -->

					</div>
				</div>