Substitution with draggabe object

Hi, I have to implement the substitution of objects and I have no much experience with jQuery. Please see the embedded image. At the bottom there is a bank of choices, inside the text there are placeholders for choices. It's easy just to drag an object from the bank to the placeholder. But it's required that all objects remains draggable. When a user drags an object onto a booked placeholder, its content should return to the bank.
I didn't find a working example to make this task.
Any help will be appreciated.
Thank you.

• Topic Participants

• yuryn1961

• kbwood.au