Ask HN: Is there any video conferencing software that has a question queue?

I work on a fully remote team at a company with a large remote contingency. We use hangouts a lot at work and were lamenting it's lack of plugin/extension support. We'd like to add a way to queue questions so that everyone has a chance to participate in the conversation. I'm curious any one knows of any video conferencing software that supports some sort of question queue and/or a way to create plugins.