please give me some codes to implement drag and drop in daypilot lite

I will of course recommend buying the Pro version since that will save you at long long hours of debugging. The price difference between Lite and Pro isn't here without reason. You can believe me, I've spent several months on getting it working reliably.

then plese tell me the procedure atleast not the code

Thank you

No such a point exists in the DayPilot Lite code (the codebase has changed substantially in DayPilot Pro). You should start from here: http://www.google.com/search?q=drag+drop+javascript. That's where I've started as well.