“When you're boss-man,” he added, “in command and responsible for the rest-you-you sure get to see things different, don't you?”

【答】he added 是插入语，意为“他补充说”。in command and responsible for...，作定语修饰boss-man（boss-man 可以不加冠词）。

in command 是介词短语作定语，意为“管事的”。

responsible for... 是形容词短语作定语，意为“负责某事的”。

以上两个词组并列作定语，美哦与省略成分。我们he added 放在句末，一切就很清楚了：

 “When you're boss-man in command and responsible for the rest-you-you sure get to see things different, don't you?” he added.