Hello,
The title in Highcharts is only applicable to the container. So if you have two charts in your container (just like you do in your demo), the title will only show up in the middle of it.
To achieve that, you have two options. The first one would be to put your charts in separate containers. The second would be to remove the original title and create your own ones for each chart using
Highcharts.SVGRenderer.
I have implemented this feature in your demo, please take a look at it.
The original title is set to an empty string, I have added a chart margin (to make some space for the rendered titles).
DEMO: https://jsfiddle.net/BlackLabel/bz90xr6h/
SVGRenderer: https://api.highcharts.com/class-refere ... VGRenderer
Let me know if that's what you were looking for!
Have a good day