You can easily edit the information entered when creating the webinar.
In the webinar, simply click on the settings icon in the top left corner.
In the General section, use the fields there to edit the information entered when creating the webinar.
Click on Save to confirm the changes.
Note: Here you can also find the specific link for inviting moderators to the webinar, as well as the settings for adding interactive features, adding a registration page, or adding design/branding to the webinar.