Radio astronomy provides means that allow the most direct investigation of the processes driving stellar activity. It also offers the best chance to detect and characterize exoplanetary magnetic fields over a wide range of planet masses and ages. The idea of this meeting has grown out of the need to better understand star-planet interaction and its impact on habitability of planetary companions, especially those in close orbits around low-mass stars. The meeting will address a wide range of the related topics, broadly divided into the following three categories: (i) stellar activity and planetary habitability, (ii) detection of planets and planetary magnetic fields, and (iii) the relevant theoretical considerations, emphasizing a potential impact of radio astronomy, especially the existing and the planned, large radio telescopes, in this area of research.