How can I add my wife as a dependent on my DTV visa in Thailand?

I was approved for the DTV out of the Los Angeles office, on my second pass. First pass was rejected because of middle name versus middle initial on application. I applied under the remote worker category.

I just saw someone post about adding a dependent after being approved. My wife is currently on the one year renewable retirement visa. We would consider adding her as a dependent of mine. I do travel back and forth to the states often. She stays in Thailand for much longer periods of time, but the 180 day max would not be an issue as we do a lot of travel to nearby countries.

I know I can research on my own, but can anyone give feedback on the process of adding her to mine and anything we should be aware of? Thanks in advance.