Mahaant means Gurmukh of his Avastha. The Pankiti means that Gopal Vaheguru appears on the forehead of Gurmukh. Since this Pauri of Siri Sukhmani Sahib talks about greatness of Siri Sukhmani Sahib, one of the quality of Mahaant is that he or she does Paath of Siri Sukhmani Sahib regularly everyday.
Kulbir Singh