Normally it would be available within 24 hours on working days.  Practially it would be lot lesser than that, depending upon what time the order is placed.

Of course, yes! You need to create your own Code Model first and we will help you with that. It may take anything between 2-4 weeks for your Code Model to be available for Code Generation. After that, you can start generating code based on that.

Sure. Please visit nksys.in to start in this direction.