2 Y-axis for a line chart

[hotNipi]

Chart node does not support that.
You can do it by making the charts with ui_template so you can provide options for scales.

scales: {
   x: {
       // x options here
   },
   y:{
       display: true,
       position: 'right'
   },
   y1:{
       display: true,
       position: 'left',                                
       grid: {
            drawOnChartArea: false 
       }
   }
}