Question bank - marking questions as "used" and providing custom feedback

Here's another option for future reference:

• Keep the slide feedback turned on, so the questions have the Correct and Incorrect layers.
• Change the layout of those layers to blank, and delete any leftover objects from the layers. 
• Add the trigger(s) to adjust the value of the answer-tracking variable. For example, if you just want to count correct answers, add 1 to a number variable via a trigger that runs when the timeline starts on the Correct layer. 
• After that, add a trigger that jumps to the next slide when the layer's timeline starts. In essence, this replaces the Continue button that normally appears on the feedback layers. Be sure to add this to both layers.

We all tend to think about layers for adding content, but blank layers with triggers can be quite useful, too!