Cybersecurity training is one of the most important countermeasures to address cybersecurity threats and their reported increase in terms of types and occurrences. Several approaches addressing the development of cybersecurity training have been proposed but a careful analysis of these approaches highlighted limitations both in terms of identification of required knowledge, skills, in terms of description of users' tasks (the job they have to perform) as well as in terms of adaptation of the training to diverse user groups. This paper proposes a systematic process to tune cybersecurity training for diverse user groups, and in particular to support the development of cybersecurity training programs for different learning groups (built from the analysis of the diverse user groups). We illustrate this process on the concrete case of phishing attacks.