Removing the dial
To remove loosen the dial screws located around the perimeter of the movement and carefully pull the dial off the movement.
Some movements use sliding levers, for slide type ( found mostly on ETA movements ) use tweezers or a small screwdriver to slide the levers out and away from the dial feet.
Some movements have screws located on the plate side with small notches cut in them that when turned lock against the dial feet. To disengage loosen the screws until the notch lines up with the foot.
Some older movements use pins that go through the dial foot, for this type simply pull the pins out and the dial will be loose.
Some movements use only friction to hold the dial on the movement. (mostly quartz movements)