The Join a Voice Channel action block will force the bot to join the specified channel, whether it is the voice channel you are currently in, a channel option, or a channel ID.
Voice Channel
This will force the bot to join the voice channel of the user who clicked a button / menu option or is running the command / event. This will only work if the user is in a voice channel before running the command / event.
Selecting the channel option will prompt you with a new field to input your channel option variable. Only channel options will work in this field, use channel IDs / Variables in Voice Channel ID.
Channel option
Input your option variable into the field below.
Selecting the channel ID type will prompt you to enter the ID.
Channel ID
The channel ID can be a variable as well. Remember this has to be a plain ID with no extra symbols or spaces, it is case sensitive like every other ID field. If you use a variable, make sure it returns a plain ID.