I recently bought Galaxy S6 Edge +. Love it! However, in my previous S5 when I used the conference facility via merge calls, I had the option to add more than one call, and also was able to pick which call to end when several lines were merged. The Edge + does not allow more than one call to be merged, and even then if I want to drop one party and keep the other one going on, there is no such feature. Very frustrating. I have to then hang up and call again. Is this feature missing totally or do I have a glitch?