I have a datatable filled with staff data like..
Staff 1 - Day 1 - Total Staff 1 - Day 2 - Total Staff 1 - Day 3 - Total Staff 2 - Day 1 - Total Staff 2 - Da
// get the data table DataTable dt = ...; // generate the data you want to insert DataRow toInsert = dt.NewRow(); // insert in the desired place dt.Rows.InsertAt(toInsert, index);