Hello @kristinubute!
The “Related Products” section is automatically generated, and there is no setting to change its position.
However, its position can be changed using hooks or template modifications. Using hooks, you can change the priority of this section to move it above the other sections.
As an example, I was able to move the ‘Related Products’ section right below the ‘Add to Cart’ button using the following code snippet:
remove_action('woocommerce_after_single_product_summary', 'woocommerce_output_related_products', 20);
add_action('woocommerce_after_single_product_summary', 'woocommerce_output_related_products', 9);
Screenshot of the output: https://d.pr/i/9hlMlQ
Reference: https://wordpress.stackexchange.com/questions/298952/move-related-products-after-product-summary
Note: You can use the ‘Code Snippets’ plugin to enter this code for your site’s frontend.
Here is how I use this: https://d.pr/i/9XsOVr
This hook code will change the ‘Related Products’ section’s position for all product types, not just simple products. If you wish to change the position only for Simple products, then this hook code needs to be modified to first detect the product type and run accordingly.
Best!