There are a couple of ways to invite participants to your meeting.
Send an email invite:
While in a session, click on the Invite Participants icon located at the bottom of the left sidebar.
An Invite people box will open.
Add the participants' email addresses to the Invite people by email field and hit 'enter'. They will receive an email with a join link that takes them directly to your meeting.
Tip: this link is pre-authenticated, so they won’t have to worry about passwords.
Send an invite link:
Follow steps 1 & 2 mentioned above.
You'll see two share options: link and password.
Copy the link, and send the link to the participant.
Copy the password and send the password to the participant
Note: you cannot promote anyone to a Presenter when inviting participants through a meeting link and password. This option will only be available until they're inside the meeting.