The Vienna VLBI Software (VieVS) developed and maintained within our Research Group has active users all over the world. Therefore, Hana Krásná was invited to the Hartebeesthoek Radio Astronomy Observatory (HartRAO) in South Africa to held an extensive VieVS training course (April 15 -17, 2014) and to answer tricky questions of users who already use VieVS in their everyday research.