Public consultation and engagement requires a two-way flow of communication between the proponent (the organization doing the consultation) and the public. The public needs to have information presented in a way that is easy to understand and this can be done, in part, by using good visuals. I recommend the booklet "Visualizing Information for Advocacy: An Introduction to Information Design" as a good resource to review before creating your public information materials. It's written for NGOs who do advocacy, but the suggestions apply just as well to public consultations.