The Rev. Thomas Richard, executive secretary of the National Association of Congressional Christian Churches, will lead a workshop at 10 a.m. Saturday, April 2, at the Rockland Congregational Church, 180 Limerock St. The all-day seminar will include the topics “New England Culture: Church Growth and Development,” and “Increasing the Finding Streams of Your Church.” Contact Betsey Mauro at 594-8656.