Quiz Maker Submit button

I have created a series of freeform drag and drop activities using Quizmaker. I currently  have the activity set so that the answers will only lock into place when it is correct. Otherwise, it returns to the top of the screen so that they can try again. This is essentially feedback in itself. The learner will try again until their answer locks. Because of this, I have turned off the feedback. I was wonder if there was any way to remove the "Submit" button and have the slide automatically advance when the answer reaches the appropriate target? It seem redundant to have the learner submit each answer when they will already know it is right. If not, is it possible to change it to a "Next" button instead?

My other option is to create a single question and have the answers appear one and a time. I had originally done it this way, but the previous answers were still moveable after they reached the correct target. Is there any way to lock them in place once correct so that there is only one moveable item on the screen at a time?

I sure hope that made some sense. Thanks in advance!