Hello again,
I thought that changing a couple of ports and bring them into a group was easy, but I'm having difficulties with it. I first needed to unbind the interface (get config | in ethernet0/1) which is done I think. When I try to add ethernet0/1 to bgroup0 with:
set interface bgroup0 port ethernet0/1
it says "unknown keyword port", but I know that this is the right command because thats what the manual says from the juniper site and when I use the wizard from the webgui it gives me the same command. The picture below explains the situation that I'm in now and how I want it. What am I doing wrong?