Complex sentence: In Japan, chopstick rests are used at formal dinners, are placed on the front-left side of the dishes and the chopsticks are placed parallel to the table edge with the points toward the left.
Split into simpler sentences: In Japan, chopstick rests are usually used at formal dinners and placed on the front-left side of the dishes. The chopsticks are placed parallel to the table edge with the points toward the left.