Thank you all for your quick replies.
I'll have to look at things again. Last week I had my 5 druid group in an order I didn't like, so I kicked one out and then re-invited him.
What you all seem to be saying is that he should then be the last member of the group when he returned. He was not though.
He was back in the spot where he was previously.
Next time I'll try disbanding the group and reforming and seeing what happens.
Thanks for the info though.