Backend Files location: php or htmls files

Hi guys i am looking to add some customization work in the home page and inner pages, so iam completely looking for backend files path, like php, and html files,

My custom work is from home page, menu and whole home pages, so please guide me the path of the files,

Please note i am looking to change from Admin Panel:, 

I want to know their files php locations from where i can add my own code and customization css, Please

I just want to know the backend files location from where i can my own coding, html work.. Please guide me the path of the files where i can change menu, and their names and dropdowns and below menu i wan to some new features.. I know i change from admin panel, but i am looking for complete backend files, like php, html files and css. this is my email address: savensaven@gmail.com

This is my website..

http://www.lateral.co.in/

This will help you look for the one that says "Personalize your Dolphin Layout"  Click this link

Also to have PHP block in page builder you may want to install this Free module from Deano - http://www.boonex.com/m/Add_PHP_Block_to_Page_Builders_

Dear Sir,

I am not able to find the Files locations: Could you give me the path of the php and html files to change in the backend.

Thanks

Savenb

Will pm you.