In this step, you define the relevant class rules for flight services for your company.
Flight class rules are used to reproduce flight-specific trip rules in your company. They define the flight classes (for example, Business Class, Economy Class), that may be booked by the relevant employee subgroup (for example, user group Executive Board) depending on the flight duration.
You can specify them in detail in the section: Define allowed entries for class rules for flight
The maintenance view in Customizing is language-dependent. Make sure that the translations that you need are done.