Not able to see Windows and IOS folders when I create the Xamarin Forms Projects

Hi ,

I have installed Xamarin Studio and required tools(SDK,NDK,GTK and JDK).My Xamarin studio is working fine but one thing is I am not able to get the Windows and IOS folders when I create the Xamarin Cross platform Application.

The reason behind the query is when I get some samples from Github they created Cross platform projet wihich is having 3 folders but I have only one that is Droid.

Could you please any one give answer for this query.What steps I need to take to get the remaining targeted platforms.I want to see the 3 platforms when I open new solution including Xamarin Cross Platform.

PFA.