We are pleased to announce that the registration to the ISMA46 and ISAAC32 Courses has opened! Both Courses will be organized on 16-17 September 2021 as traditional in-person events, taking into account social distancing and other imposed COVID-19 restrictions. Nevertheless, as nobody knows how the future will evolve, we will continuously monitor the COVID-19 situation. If necessary, a cancellation with full refund of the Courses will be communicated no later than September 2nd. In such case, the Courses will not be postponed, nor will they be transformed into virtual events.