You can do it with JS or add a4j:support on valueChange event for the first input and reRender the other elements. (I suppose that they must have an attribute disabled)
But if i rerender them then i cant see all the three textboxes at first right ?
Then only i can see the first checkbox when the page first time loads ?
No, I mean you can use EL condition in a disabled attribute of your elements. So you will rerender them at the moment when a user entered data in the first input. And they will become enabled.