How can I make my discord bot join the author's vc?
Assuming you're using Discord.js, you can call joinVoiceChannel() (see here) and use message.member.voice.channelId to get which vc the message author is currently in.
Assuming you're using Discord.js, you can call joinVoiceChannel() (see here) and use message.member.voice.channelId to get which vc the message author is currently in.