In the future companies employ more and more trainees with different learning requirements. Trainers then need training concepts, which are suitable for both weaker and particularly strong trainees. The guide includes a qualification concept to deal with heterogeneous learning groups. Trainers in companies and educational institutions receive suggestions on how to differentiate learning processes within groups. In addition, the concept may be used for training courses for trainers (AdA) as well as for professional development courses for certified continuous professional development educators and certified professional educators.