Do Not Force Agreement
The truth is that in some cases, you won’t be able to reach an agreement on both sides, especially if the two parties feel strongly about their individual viewpoints.
The most important thing you can do as a presenter is to ensure that your learners maintain respect for one another during the classroom and avoid name calling and threatening behavior.
If this means dropping a disagreement that seems to be going nowhere, then do so and move on to the next topic.