Add two row headers on different columns in an Input Table

Is there away to divide the input table into half vertically? I want to have 2 sections of rows. So in the pic below. Buildings/structures would be right next to building utilities?

Unfortunately, it is not possible for the Input Table to have two row headers. What I can suggest is to use the Spreadsheet widget instead. This looks like an Excel file wherein you can add simple formulas, column, and row names. 

Here's an example:

You may refer to this guide on How-to-Set-Up-the-Spreadsheet-Widget.