One great way to increase engagement with your knowledge base, is to use the data against your users. It sounds funny, but it works. We found that moving your top viewed questions to the top of your knowledge base usually helps promote user engagement.
With reordering questions/categories, you're able to simply drag & drop the position of a question or category in the appropriate spot. If you'd like a question to be shown first, all you'd have to do, is drag the drag icon way to the top of the list – Helpjuice does the rest.
Here's an example of how that works: