I just got deluxechat to have my luckperms pfrefixes show in chat, what do I type in chat using hte luckperms plugin to add prefixes to DeluxeChat?

You can already do that. At least add flags to the URL. The pool-settings have a section called properties. Add whatever you want. They are added directly to the URL

This comment was meant for #1577

I think Brainstone's response above was meant for another issue. ;)

To answer your question, you need to use the addprefix command.

https://github.com/lucko/LuckPerms/wiki/Prefixes,-Suffixes-&-Meta