The third meeting of the Morrissey Boulevard-K Circle Commission is slated for this Thursday, May 2 at BC High from 6 p.m. to 8 p.m. Jake Wachman, state Sen. Nick Collins’ designee on the commission, urged the public to attend or log-in virtually. “This is a once-in-a-lifetime opportunity to shape the future of the Morrissey corridor and Dorchester waterfront,” Wachman said.