Smart wall-switch users - help! scenes / automations

I’ve just installed a Shelly 2.5 smart switch behind a standard wall switch (actually two ceiling pendants). This works fine, however, I’m struggling to work out how to get the automations / scenes working.

I want to use the physical switch to turn on a ‘bright’ scene, and turn off the lights too.

I also have about 6 lamps in the room too. These are all set up in scenes, so I can have a ‘dim’ scene in there.

The problem is if I select the dim scene, this has the wall switch turned off (you know, to make the room dim). but when the wall switches turn off, the automation kicks in to turn off all the lights. I just can’t get my head around this??

Any help would be great.