Control your meetings like never before! “Let everyone bypass the lobby” setting is now General Available in your meeting options.
With this setting on, all people in your organizationand guest users will bypass the lobby. The feature is available as a new value in “Who can bypass the lobby?” dropdown in Teams Meeting options. You can set this in your existing Teams meetings as well as in your future Teams meetings.
Do NOT bypass the lobby
I also did a small blog on how to enable the lobby, you can find the blog article right here