Add a ACF relationship field to either a page, posts, event, other-CPT or options page.
Example add ‘footer_reusable_blocks’ to the options page
In the footer file:
<?php get_template_part( 'template-parts/panels/footer-reusable-blocks'); ?>
And in the ‘template-parts/panels/footer-reusable-blocks’ part:
<?php
if ( ! function_exists( 'gomo_additional_panels' ) ) :
function gomo_additional_panels() { ?>
<?php
$posts = get_field('footer_reusable_blocks', 'option');
if( $posts ): ?>
<div class="entry-content">
<?php foreach( $posts as $post): // variable must be called $post (IMPORTANT) ?>
<?php setup_postdata($post); ?>
<?php the_content(); ?>
<?php endforeach; ?>
</div>
<?php wp_reset_postdata(); // IMPORTANT - reset the $post object so the rest of the page works correctly ?>
<?php endif; ?>
<?php }