Here is the chair role description from our constitution. It's highly recommended speak to our current chairs for more information

5.5. Chairperson:

5.5.1. Shall be responsible for organising frequent ‘show debates’ during Term Time, these debates shall consist of a panel of speakers judged to have expertise in the topic or authority to speak on said topic; may also organise individual speaker addresses, discussion panels or similar audience focused events;

5.5.2. Shall have a responsibility to ensure panels are balanced with regard to viewpoint;

5.5.3. Shall be responsible for ensuring the values of the society are upheld in these show debates;

5.5.4. Shall select the motions (topics) for debate, their choices should be presented to the committee who shall be given the opportunity to voice concerns. If a simple majority of the committee votes that they have concerns then a new motion shall be chosen and presented;

5.5.5 Shall be responsible for any risk assessments required for external speaker events;

5.5.6. Shall chair and moderate the debate, remaining personally impartial and ensuring that decorum and equity is maintained by all parties; and,

5.5.7. Shall ensure that the audience be given the opportunity to put questions to speakers at debates.