The Doc Sidebar element lets you create a sidebar for your Single Doc in Elementor which displays all the other documentation articles and categories that you have created.

From the ‘Content’ tab, you can choose the layout for your Doc Sidebar. Currently there are three layouts available, each with its own distinct style. The first one is available for BetterDocs free, but you will need to have BetterDocs PRO to use Layout 2 and Layout 3.