In my web app, I have a long list of items on one side of the screen and a shopping basket list on the other.
Here is an example:
The app works by checking the boxes next to items and then clicking add to basket. This moves them over to the shopping basket list.
(Because of the large amount of items in the list, I think I need to stay using checkboxes by the way. Please don't stress on this point too much.)
Most people get that the checkboxes on the left list are to add things to the basket, but they dont understand the checkboxes on the right. Some people even think that you have to check the boxes in the right hand list if you want to take them to the checkout.
How can I make it clear that the checkboxes on the right are to actually remove items from the basket in bulk?