[Plugin: NextGEN Gallery] Inserting multiple images at once

We have the same question and we have an other problem

I put my images in diffrent folders in Nextgen gallery this is because
we have a lot of product images
and we want to find them quickly and attach more then one image at the
same time to a post also with text if possibel

other problem
we can upload the images to diffrent folders but when we attach them
to a post a slider or anything else the images are not showing at the
frontend, they show at the back-end but at the front only a white space is showing in wordpress
at the back end we do see the image in the post but not at the front
The folders have 777 permission