WooCommerce – How to show stock indication for all product variations

Hi guys,

I am a newbie. Please forgive me if I make any mistakes in this post.
I am trying to setup a wordpress website shop using Woocommerce plugin. I can set attributes and variations for a product. For example: Sizes: Small Medium Large.

1)How can assign stock level to these variations?
2)Any pluggin that allow me to display an indication of stock level for each variation on the shop page (front page, product catalog,…) without having to click on Product to see its details. For example: Under the product price and description, there will be for images corresponding to size variations. If Small size is low in stock then I use this image, In stock then using a different image, out of stock,..ect

Thanks very much…guysssss

Cheers,
Doug