Question
How to add a button to a visualization?
Answer
1. Click the "Add new button to visualization" button
2. A rectangle appears with a grey border. The mouse pointer has changed to a black cross. You can drop the button on the right place
3. You can enter the text, for example, "Meteo"
4. And look, a nice button
5. In the same way, you can add the buttons "Climate" and "Energy"