Regular exercises are not only partially required by law, but are necessary and helpful for checking the procedures and understanding of the role of each individual.
What is played through several times in exercises loses its horror when it has to be applied in real life.
In aviation, this type of training was established decades ago with the use of simulators. And it will also bring out a whole new culture in your company.
Correctly carried out exercises are time-consuming to plan and organize and, especially when it comes to the feedback afterwards, it is advisable to commission an objective, external body to do so.