Drag and Drop

I've found similar problems on the forum elsewhere and wondered if there had been any solutions.

This is my first attempt at a drag and drop Q.

I have 4 drop items and 2 distractors. All 4 drop items are correct and need to be dropped onto a container area.

I've tried doing this with a large drop area and setting the four areas at the four corners. This works.... but only if the correct image is put in the correct corner.. they're all correct though!

Alternatively if I have a smaller area and line up all the drop areas so that they overlap perfectly then I can drop all four items onto the correct spot.. this doesn't work though.

How can I have my user select the correct images and place them into zone without telling them where exactly to place them. Please don't say do a multiple choice question instead as that is not what the client wants.

I'm using Lectora X.

Thanks for any help on this.