When you are presenting to a diverse audience, how do you determine the whole audience's preference to receive communication. Some individuals like...

When you are presenting to a diverse audience, how do you determine the whole audience's preference to receive communication. Some individuals like face-to-face and others emails. The key is being sure you can reach the majority of your audience with your selected method of communication. How do you ensure you reach the majority of your audience in a large group where some of the participants prefer face-to-face communication and others prefer written? How do you create a good balance?