Plaques are added to Kings Park's Honour Avenues during regular dedication services held at May Circle, with a limit of 12 new plaques per service. The next service is scheduled for mid-year 2022 and sadly there are still thousands of Western Australian service personnel who qualify for a plaque with no known grave in the State.

With a limited number of trees and space existing along the avenues, plaques are sometimes moved to be placed together; these are often family members or unit comrades.