Channelaire Rehearsal

* The Channelaire Chorus, a women’s four-part harmony ensemble, will meet from 7:15 to 10 p.m. at 2620 Las Posas Road, in the Village Square Shopping Center, Camarillo. Guests are invited to join the group’s weekly rehearsals. Free. Information: 247-1990.

Western Dance Club

* The Country Lovers Western Dance Club will offer line dance lessons at 7 p.m. at College United Methodist Church, 16 Baylor Drive, Ventura. Couples lessons will follow at 8. $3. Information: 647-1893.

Support Group Meeting

* The Journey of Hope Support Group for friends and family of people who are mentally ill will meet from 7 to 8:30 p.m. at the Mental Health Services office, 300 Hillmont Ave., Ventura. Free. Information: 526-0766.

Chamber Business Mixer

* The British American Chamber of Commerce will host a business mixer from 6 to 8 p.m. at Sherwood Country Club, 320 W. Stafford Road, Thousand Oaks. Hors d’oeuvres and drinks will be provided. $20. Reservations: (310) 394-4977.

Help for Co-Dependents

* Co-dependents Anonymous will meet at 7:30 p.m. at the Adult Center, 6950 Ralston St., Ventura. Free. Information: 647-2215.

Relaxation for Children

* Mikal Rogers, a health technician for the Pleasant Valley School District, will teach stretching and breathing relaxation techniques for children 6-10, from 5 to 5:45 p.m. at the Camarillo Health Care District, 3639 E. Las Posas Road. The class will continue weekly through Aug. 5. $15 for Camarillo and Somis residents, $18 for others. Registration: 388-1952, Ext. 258.

COMING UP WEDNESDAY:

* The Jim Gamble Puppets will perform “Peter and the Wolf” at 10 and 11:15 a.m. at the Magnificent Moorpark Melodrama & Vaudeville Company theater, 45 E. High St. $5. Information: 529-1212.

* The Ojai Band will perform from 8 to 9:30 p.m. at the Libbey Park bandstand at Ojai Avenue and Signal Street. Guests are invited to bring lawn chairs or blankets for lawn seating. Free. Information: 646-4665.

* Community Medical Group will offer an “Early Bird Prenatal” class for women in their first trimester of pregnancy from 6 to 8 p.m. at 3605 Alamo St., Suite 100, Simi Valley. Free. Registration: (818) 706-2211, Ext. 250.

* Ranger Cameron Bowers will share Native American stories at 10:30 a.m. at the H.P. Wright Library, 57 Day Road, Ventura. The program is intended for children 5-12. Free. Information: 642-0336.

* The Crohns & Colitis Foundation of America will meet at 7 p.m. at the United Methodist Church, 1049 S. Westlake Blvd., Westlake Village. Free. Information: 581-1981 or 379-4380.

* Living Positive, an HIV Early Intervention Program, will discuss the pros and cons of people with HIV beginning, changing, or returning to a job or career, from 7 to 9 p.m. at the Ventura County Public Health auditorium, 3147 Loma Vista Road, Ventura. Free. Information: 643-0446.

* The Arthritis Foundation will meet at 10 a.m. at the Camarillo Health Care District, 3639 E. Las Posas Road, Camarillo. Free. Information: 389-5222.

* The Panic Support group will meet from 7 to 9 p.m. at 1459 Thousand Oaks Blvd., Building G, Thousand Oaks. Free. Information: 497-8492.

* Long Term Care Services will host a program for people who have placed or are planning to place a relative in a nursing home from 9:30 to 11 a.m. at 1841 Knoll Drive, Ventura. The program will cover effects of institutionalization, community support and resources and ways to cope with guilt and frustration. Free. Registration: 656-1986.

Today’s Agenda, a daily listing of events, is compiled by Leo Smith. All events must be open to the public. Please address items, with a publishable telephone number, to Today’s Agenda, Los Angeles Times, 93 S. Chestnut St., Ventura 93001. Items can also be faxed to The Times at 653-7576 or 653-7548.