If you are not going to address any of the subjects and issues your audience brings up, then you are going to have an audience interest problem. Tell them when you ll stop. Audiences are used to presenters going longer than their allotted time. Right up front tell your audience what time you will stop talking. Your audience will have a mix of people so employ all these modes of information processing in your talk.
Visual people like to see things.
They want to see visuals such as diagrams, flow charts, timelines, and product photos. They need to see a picture either in their head or externally in order to really understand the information. Visual types also like to draw diagrams and cartoon characters as you, the presenter, talks. This keeps them engaged in your talk as they attempt to illustrate what you are saying. Auditory people like to hear.