Tech Admin. for live online event for questions/polls

We are looking for a person to do 1 days works on site in Central London on March 9th. They will be moderating incoming questions and interactive Polls on a live interactive Event. We use the [login to view URL] platform. Experience with this is not necessary but similar experience would be desirable. Also an expereince of Internet Broadcasts/Live Streaming would be an advanatge. Please note the role cannot be done remotely, so please do not reply unless you are 'London' based and are available on 9th March