I myself was searching for this information didn’t run across it if it’s here and also found some info but it was conflicting. Houston Texas here and just approved for my DTV visa but have dependents I want to apply for as well. Used Washington DC Embassy. I specifically asked about 12 and under for my specific situation. Applicants funds are sufficient to show for the 500,000 baht when applying for dependent visa. Just wanted to place this information here for anyone that may be looking for it or need it. I know I also read that it depends each embassy so shoot them an email.