Boston’s Mayor Michelle Wu tapped two new faces to lead the charge in her office’s innovative wing, Mayor’s Office of New Urban Mechanics (MONUM), a hub known for its progressive initiatives to tackle city governance and civic challenges. Urban planning heavyweight Shin-pei Tsay steps in as the new director, with former Boston Public Schools teacher and civic innovator Marcy Ostberg snagging the deputy director seat. The pair slid into their new roles earlier this month, the city’s official site reported.