How can I/Is it possible to make a group chat?

I have alot of friends on “That One Chat Platform For Gamers (Discord)”.
So we wanted to do something silly, and we did.
We now have WLM, but we cant figure out how to group chat.
What should we do to fix this?

double click on someone you wanna add, click the dude with the plus on the top left corner, and check the rest of the friends u wanna add