The network, which will launch this fall, was born out of a January 2015 meeting of the Anabaptist Renewal Circles.
The event is part of the church’s 175th anniversary celebrations.
Four Elkhart County Mennonite churches have left their governing conference in the last year, and national church officials worry the issue threatens to split the denomination.
An anniversary Mass at 11 a.m. June 7 will include a formal reception.
The day-long workshop will be led by Hoosier Interfaith Power and Light.