UMG Widgets are probably the easiest way to do this if you are just beginning out, as there are lots of tutorials on how to do that. Otherwise you’d have to play with different components in the actor blueprint like Text Render and make them intractable (most components have a on clicked event). If you want an example on how to click on things in a scene the puzzle blueprint feature (when you create a project) might be worth a look at as an example. Hopefully that will help!