Specifying columns in parent with whole row child control

JohnCannon.IT

I think your example in https://datatables.net/extensions/responsive/examples/child-rows/whole-row-control.html is what I want. Just one question: is there a parameter or a way to delineate the first X rows in your HTML that are going to be the parent, rather than just "display nowrap" in the table? I want to have the first four as parents only out of 28 columns. Following the example, it's going to take whatever it can before it hits "nowrap" and then will use the rest of the columns as children.

• John