Just for completitude, I am doing my own process with discourse as a platform for webinars here.
I am writing a guide for my team within apc.org to be able to host events using discourse not only as a space for getting informed about events, but also to encourage participation in the platform through it.
Would love to hear your thoughts about it (you can either reply here or comment on the pad): Workflow for holding online spaces on discourse - HackMD