Some OM-A-7 regulations define different FDP and Duty period calculations when it comes to different types of Standby duties.

When you define Standby duty in the section Crew > Duties > CDR Definitions you can divide it into a few types:

If your OM-A-7 has regulations regarding different standby duties, which determine the allowable FDP and Duty - those regulations will be set up in Leon by our IT dept. That means, each time you assign a different STB type, Leon will calculate it according to the FTL regulations.