While you're at work your performance goal is to . being productive, that is accomplishing your goal by expending as few resources as possible,

While you're at work your performance goal is to :
-that is accomplishing your goal by expending as few resources as possible,

If it's a smaller child or infant, place one on the middle of the chest and on the child's back. (if it is a bigger child with enough room for two, place one on the upper right/your left of the chest, and one on the lower left/your right) the pads should never touch each other.