Hi CherryM, welcome to the community.
This support article covers scheduling a recorded webinar (aka simulate live webinar).
- Basically, you host and record a standard webinar with no attendees, and then when you schedule the recorded webinar you select the new recorded webinar.
- You can change the recording if needed. How to do this is also covered in the support article.
- For reducing background noise the use of a headset is recommended. Headset microphones are designed to capture the sounds directly in front of them, this minimizes some background noise. GoToWebinar also has some built-in noise cancelation which should help.