I have a drop down with fiscal year  as follows
2012-2013
2013-2014
2014-2015
2015-2016.

On section of particular option like 2015-2016.
It should populate data from april 2015 to march 2016.
how this can be achieved.
by formula or by controller class or by creating objects which stores corresponding values like april 2015,may 2015 .....to march 2016.
 

I am working on lightning project.
I wanted to create a menu which contains parent node and child node .on click of child node a corresponding component will be called.
<c:objectPanel />

the details of this menu and corresponding componemt are stored in custom object (Menudetails).
How is it possible in Salesforce lightning.If not how to achieve this left menu as shown in below link.
https://developer.salesforce.com/docs/atlas.en-us.fundamentals.meta/fundamentals/adg_app_arch.htm


.Inserting Parent and child objects simultanously.
secondly i wanted to create a component which will insert parent and corresponding child record.
insert child record section will open on clicking on checkbox(Has child).