If you are a Google Calendar user you can download the Fireflies Chrome extension, which enables the user to place an "Invite Fireflies" button when you are creating a Google Calendar invitation. When you hit the button email@example.com will be added to the meeting.
If you are a Google Meet user, the Fireflies Chrome extension places an "Invite Fireflies" button within the menu in Google Meet. When you hit the button, firstname.lastname@example.org will join the meeting.
Note: It may take a few minutes for Fred to join the meeting.