add multiple items to cart

Did a quick search on this, but couldn't find anything. Using v 1.5.0.5.

I have a customer that wants to have a list of all the items in their cart (less than 100) that they can enter quantities, then click add and everything would go in the cart at once. This would be more for internal use when customers call in orders and their customer service wouldn't have to go from page to page adding items.

Or is there an admin module for something like this? I checked the extensions and didn't see anything, but I may not be using the right search terms.

I could probably create a page that pulls the info from the database, but wondered if anyone has done this already?

Thanks!

The Export/Import tool may help you with this:

http://www.opencart.com/index.php?route ... order=DESC

Maybe I should clarify. I'm not looking to add products, categories, etc. I'm talking about the actual shopping cart checkout procedure. If a customer calls in an order,the customer service rep would go to this page and see all of the items, enter a quantity for the items wanted, click 'add to cart' and they would be ready to checkout at that point.