Who should I list as a local guarantor for my husband's visa application in Thailand?

I am on an extension of stay through my employer. My spouse will be changing his visa so he is a dependent on mine. My employer put together a letter and other paperwork on his behalf as we go to file at a Thai embassy next week. I've also got my marriage certificate, an affidavit, my original work permit that are coming with, too. My husband has his passport and photos.

In looking at the visa form, it asks about "local guarantor." Is this my employer or me because he's a trailing spouse?