I'm having a set of items and a set of groups, The items can be dragged and dropped onto the groups to make a different combinations as user wants.
Now my question is which is the best place on screen to put these drag and drops. I mean
items list and then groups
groups and then items list
Here my groups section occupies 2/3rd of the screen width and has some additional information about the items validity in the screen and some other details.
Please help which placements is better and why?