Hello,
You can change the position of the brand on single product page via editing royal/woocommerce/content-single-product.php file et_product_brand_image()
http://prntscr.com/iyd51n
for example in product content http://prntscr.com/iyd5cw
but for the description tab, it requests a lot of additional customization
Please do all changes using a child theme
To display all brands in the description tab, you can add an appropriate widget in custom widget area then show this area via element VC in the description.
Regards