How to customise product category page?

i have a category , under that i have multiple subcategories which are displayed on a page as list with thumbs. When i click on a subcategory it gives me the product. I am using wc vendors plugin. When the products are displayed i want to group them by vendors! How can i do that..I have tried adding a vendor sorting & i succeeded.Now when i click on vendor sort all the products are displayed accordingly i.e at beginning first vendor products are displayed then the second vendors but now i want to display all products grouped by vendor..

Please help me on this..

https://www.ads-software.com/plugins/woocommerce/