Hello, are audience members adult learners? The audience helps determine the cognitive load to deliver in content such as extraneous material and germane loads. Instructional design for adults learners should guide learning through experiences. Adults learners are generally motived to learn and seek new knowledge; consequently, students are guided through learning such as experiental or problem-based learning. The audience is the underpinning initiative for instructional design.
Also research ADDIE for an understanding of the basis of ID.