Okay, there was a button that said join group. It did not ask P&W so I am assuming it was specific to the invite you sent out as part of the P&W group invite. I am finding my way around it as I have never used it before. Its a bit clunky piecing it all together. Example - I started a discussion which I thought was only for P&W's but I see it is available for ALL to see. So a bit of learing involved and I will look into it a bit more before posting now!!