I am setting up a weekly webinar using the GoToWebinar integration. I understand that there is no support for an entire series beyond cloning each webinar individually. Other than this workaround is there a better way to have people register for a webinar series at once?
Michelle Oliphant, there is a useful guide to this by Josh Hill that may help you:
How to Setup Recurring Webinars in MarketoMarketing Rockstar Guides