I turned on integration with my computer, so when I click on THIS PC (windows 10) a lister opens. Love that. I want to add some tabs but when I add them I cant save the lister as I don't know which lister runs at that point, I think if I save it to default that's not the one that's called when I click on This PC
Save to the default lister (Settings > Set As Default Lister), and turn on Preferences / Launching Opus / Explorer Replacement / Open all Default Lister tabs when opening a new window.