In default virtuemart,We can upload only single image but in product there are multiple image of single product.This plugin is solution of that problem.In this plugin all image will upload via ajax.After upload the image just select the image and assign the image to the product.
If product is in edit mode then it will direct assign image to particular product.
Here are the steps how plugin work.
1) Install plugin in extension manager in Joomla.
2) Enable plugin in Plugin manager in Joomla Administrator.
3) You can see Upload option in Product Image tab in Virtuemart.
Enter product detail exclude only image of products.
5) Upload images using new Upload button and after complete upload page will reload.
You can see that all images are assigned to that product.
For More information and demo, Please check Youtube video.