This behavior is much better implemented by third-party scripts.
You can see the camera rotation logic in OnlineMapsControlBase3D.UpdateCameraPosition, disable "Allow Camera Control", and implement it in your own script.

On the OnlineMapsTileSetControl.cs script you can chose between "Center Point Elevation" and "Max Elevation In Area" as a look at for the Camera. I need to be able to have the camera look at a game object that I am using to adjust the elevation manually in order to look at something hovering over the map/buildings. At the moment I have my Main Camera as a child to another camera that is disabled but used by the aforementioned script for rotation and distance purposes and have a look at script on the Main Camera as a work around.

It would be nice to be able to assign a game object as a third option.

Just a thought. My work around seems to be working fine for now.

Thanks