Custom visuals can be created if you need something beyond what you see on the Visualizations pane. This does involve programming or coding, so it's not something that everyone can do. If you have a developer on staff, just know that they can build custom visuals.
Fortunately, several developers have created custom visuals and made them available in a Visual Library for non-coding users. This library contains both standard visuals and R-powered visuals (see the next section about R).
Note
You can view the library at the following website: https://app.powerbi.com/visuals/
If you see a visual you like, click on it, and you'll have the opportunity to download both a sample (that runs in Power BI Desktop) and the visual itself. Once you have downloaded it, you can import it to the Visualizations pane in the Power BI Desktop by clicking on the ellipses (…) and choosing Import a custom visual, as shown in this screenshot:
