How do you rejoin a group on skype?

[Slim]

So I left my friends group after them spamming something on the chat. How do I join back? Im in the call with them but when I go to the chat all it says is "You have left this group" i know the admin has to invite you. But what does my friend have to click so that he can add me back to the group?

[John Smith]

He has to check you out once again on skype and add your username and id. Drag you to the list