Loosely translated, Ming Zhu 命主 means 'Life Master' and Shen Zhu 身主 means 'Body Master'.
There is much to be discussed about Ming Zhu and Shen Zhu, but that will be another topic.
For now, Chart Ming Zhu 命主 as per below.
The Life Palace Branch 命宫宫支 determines one's Ming Zhu.
Chart Shen Zhu 身主 as per below.
The Birth Year Branch 生年支 determines one's Shen Zhu.