I believe you are referring to the header row of the "spreadsheet" ?
This won't help you with meta tags. Before you can incorporate meta tag data into the "spreadsheet", the capacity for easypopulate.php to read/write into these database fields need to be built.
It's not difficult to make these edits to easypopulate.php, and the technique is outlined HERE.
You need to be very careful making these edits, however... follow the instructions with appropriate care.
You may want to consider adding other fields from the products table while you are doing the edits. (You will also see the FIELD NAMES for the various meta data fields. You MUST make sure your edits to the php file use the same field names...)




