Delivery & Return
First - go to WPBakery Page Builder > Role Manager and under the user roles, choose the post type is Custom and check the post type you want to use the WPBakery Page Builder (nasa_block)
Simply go to Static Blocks > Edit Delivery & Return
If your site uses Elementor: go to Elementor Header & Footer Builder > Add New or Edit Delivery & Return (Template: Custom Block).
In addition, please navigate to Appearance → Theme Options → WooCommerce Extended to know the position we have designed the Delivery & Return: