During the next four years, Europlanet RI will organise a series of workshops aimed at improving the coordination between space missions and ground-based observations. These workshops will be organised by the Networking Activity NA1 “Observational Infrastructure Networking”. Based on the work carried out in the past few years, key topics for the workshops will be Planetary Aurorae, Small Solar System Objects, and Airless Bodies in the Solar System. Other topics will be chosen on the basis of interest and topicality. This EPSC session is an essential forum for information exchange and discussion for all those who wish to be involved with the NA1 workshop programme.