The lowest setting which turns the screw.

Most electric screwdrivers are anyway not marked with torques.

Instead you start low and increase the setting one click at a time until the screw is seated properly, then use that setting for the rest of the screws.

Maybe they should pay attention to science and mark them properly in N-m. It would make jobs programmable and reproducable from one screwdriver to another. I could own a DeWalt and borrow someone's Ryobi or Makita or some other brand and nail the setting the first try by dialing the correct torque in N-m. The limiter is already there; they just need to change the markings.

I don't know about your electric drill, but after assembling two sets of shelves with mine, I know which torque setting is "about as hard as I can do by hand".