You use the branding options when you schedule the webinar, just like you would for a live webinar.
Hi Glenn - thank you for your reply. I am sorry if I am being dense, but I had already added the branding and event image etc. and watched the support on branding a webinar, but I don't see how to change the default waiting room screen. There is no "branding options"? Thank you.
The Waiting Room is limited, it should show the images you uploading in the Branding options for example a Presenter's image, but that is all.
@JoshuaVB Thanks for reaching out. We have several customization improvements scheduled for 2022.
In the meantime have you also checked out GoToStage Channel functionality? https://support.goto.com/webinar/help/what-is-a-gotostage-channel-g2w040030