I had to figure it out on my own and doing it with no help or support. It should not be this way. Very few law students become law professors. Most of them become lawyers. Physics schools do not seem to prepare students for a productive and successful professional life outside universities and laboratories.
Every single physicist has to deliver seminars and many have to lecture.
However, because there is no system in place to train people to do it professionally, the quality of seminars and lectures is usually poor. Moreover, some physicists don't know how to prioritize tasks and manage efficiently their time. Academic culture actually encourages inefficient behaviours. Among the technical skills I would emphasize software skills. Physicists do not learn how to develop software professionally.