Dealing with Difficult People: Association Board Members, Unit Owners, and Management. Seminar by Howard Dakoff, partner in the Community Associations Practice Group of Levenfeld Pearlstein, specializing in condominium, real estate, and general corporate law. And Jim Stoller, President and CEO of The Building Group, with over 30 years of experience in real estate cooperative and condominium property management and architecture. 1221 North LaSalle Street, second floor. Reception and registration at 6:30 p.m. Presentation 7:00 to 8:00 pm. Cost: Free. Seating is limited, RSVP is required. Map. More info.

Public forum on how to preserve Chicago’s dwindling but vital supply of two-flat and three-flat apartment buildings. Built between 1880 and 1970, two-and-three-flats are key sources of affordable housing in Chicago but thousands of rental units in these buildings have been lost in the last 30 years due to a variety of factors. Panel includes newly elected 47th Ward Alderman Matt Martin; Sarah Duda, Deputy Director of Institute for Housing Studies at DePaul University; and John Zachar, a Northcenter-based architect with considerable experience in two-flat renovation and conversion. 6:30-8:30 p.m., Sulzer Regional Library, 4455 North Lincoln Avenue. Cost: Free. Map. More info.

Celebrating the great influence of the music genre born in this city more than 80 years ago, the Chicago Gospel Music Festival will present the top gospel artists in the country. Over the years the festival has featured traditional choirs and contemporary urban gospel. Chicago Cultural Center, 78 East Washington Street, on May 31 from noon to 4:00 p.m. Millennium Park, 201 East Randolph Street, on May 31 from 5:30 p.m. to 9:00 p.m. and June 1 from noon to 9:00 p.m. Map. More info.