Hi:
The documentation
http://support.sas.com/rnd/base/ods/odsmarkup/tableeditor/index.html
indicates the existence of a frozen_rowheaders suboption. That might be what you're looking for.
cynthia
PS To reveal ALL the suboptions available for this tagset, add
[pre]options(doc="help") [/pre]
to your invocation syntax. Also, there should have been a "README" file in the zip file that you downloaded to get the tagset template and examples.