Thank you very much for your replies.
I’m using Elements 9.5
Your Replies were of great help to me.
Bringing up the mixer with F3 let me see my mistakes. I rerouted the channels to the appropriate Bus.
I was also able to add any track to any group channel.
My mistake was that I selected a track then I right click to add. There was no such option available in the dropdown.
Thank you again
