Click on your webinar, scroll to "Extra users" and click on "Edit" > "Send invitation email". In this invitation email the date, time and link for the live- and test webinar are provided.
To share invite links yourself, click on "Edit" > "Show invite links".
There are two links, one for the real live webinar and one for testing. When you start a test yourself (using "Test the webinar"), your moderator should use the test link, and for the real webinar the moderator should use the live link.
Please note: The amount of moderators you can add will differ for each package. Please check out the pricing page for more details.