Hal,
The set trigger on the drilling is a single set trigger. You push the front one forward to set the front one, not the back one.The trigger should not be set until right before you intend to fire the rifle barrel.If,for some reason, you don't fire the rifle after setting the trigger; open the action and touch the trigger to unset it(the safety can be on or off).My German gunsmith friend was of the opinion that it is more dangerous to carry a gun with the safety on, but the trigger set, than with the safety off and the trigger unset.Don't forget that the front trigger fires the righthand shot barrel also, and if left set can create a "surprise" if firing the shot barrel.
Mike