Assume that you create an online meeting as a presenter in Microsoft Lync 2013 (Microsoft Skype for Business), and then you share the meeting URL. The present button isn't displayed in your conversation window when one of the following conditions is true:
- When the first user opens the URL, and then selects the Call Me At option to join the meeting from Lync (Skype for Business) Web App as a guest.
Note When another user joins the meeting as a guest, the button is displayed again. - When the first user dials in to the meeting as a guest.