Hi Elinder.

Please find anwers to your questions below:

1.How to place legend inside the chart, currently it is in the left side above the chart?

You can use css to place the element wherever you like, for example:

                
           style="left: 90px; top: 60px; position: absolute;"/>

2.How to left align yaxis label values, currently all values are right aligned?

There is the labelHorizontalAlignment property for axes to achieve that:

                    {
                        name: "PopulationAxis",
                        type: "numericY",
                        labelHorizontalAlignment: "left",
                    }

3.Two decimals tooltip values format with comma's like (5,000.00 and 20,000.00) with datetime format?

I didn't understand your query here, could you please clarify ? Do you want to display a numeric value like 2.000 with a comma as a separator ? What about the datetime format ?

4.How to set HorizontalCrosshairVisibility  = false ?

You can use the horizontalLineVisibility property of a series object. It takes values "visible" or "collapsed" and collapsed hides the relevant line:

     {
      type: "crosshairLayer",
      name: "crosshairLayer",            
      targetSeries: "1995Population",
      horizontalLineVisibility: "collapsed"
     }

5.Small sample application is really very helpful for us.

You can find a sample demonstrating how to use the above mentioned properties. I hope it helps.