In addition to the summer schools and the annual retreats, more focused meetings bring together young members and PIs of the CRC-TR from closely interacting subprojects and, where appropriate, external guests. These smaller scale seminars are organized on a regular basis. The participating groups present their projects to each other and discuss further opportunity of collaboration. The focused meeting provide the attendees with an opportunity for advanced training and exchange and for expanding their scientific network. Every student in the IRTG is be expected to participate in the organization of at least one such event during the time of the thesis. The CRC-TR office and the PIs of the participating sub-projects also provide support for the organization of these activities.