As per the announcement posted last Wednesday on the Discord, the process is manual in which case you'll need to request someone to do it for you.
Today’s the big day, server 6 gets launched. Remember if you want your donor rank set, provide some proof to any head mod+ that’s online. As always follow all server rules. There may be a few things slightly broken, as it’s brand new and not everything will be perfect quite yet, if you find a bug or something we forgot, simply do one of two things, report it in report chat, or message staff and they’ll get it to me. I hope you all enjoy the new server, and for those asking, mod applications for s6 will be open in 2 days.