As of January 1, 2019, a new organizational structure of the United Church of Canada came into effect.
The Trinity United Church congregation is now referred to as a Community of Faith within this new structure. It resides in the East Central Ontario Regional Council (Previously known as Regional Council 11). Presbyteries and Conferences no longer exist.
The organizational structure, broad policy statements, and governance roles and responsibilities of the bodies within the United Church of Canada are described in the 38th (2019) edition of The Manual of The United Church of Canada, and which came into effect on January 1, 2019.
The Manual incorporates remits approved during the 2015–2018 triennium and enacted by the 43rd General
Council 2018. It also incorporates additional changes approved by the 43rd General Council 2018 and the Executive of the General Council.
Here is a link to a PDF of the The Manual of The United Church of Canada.