You can specify this information in the "Tender Information" section.
If your table has a different column order, it's better to swap them according to the pattern. Extra columns should be removed.
We want your table of volumes to look good and convenient for the contractor to navigate in it. Therefore, we pay so much attention to sections and subsections.
If there is any information in the line of a section or subsection in the columns "Units" and "Quantity" we will not be able to display it as a section or subsection.