The rules require that no crew member may accept an assignment unless given a rest period of at least 10 consecutive hours prior to duty.
The amount of rest between each duty period is now easily discernible in the New LogTen Time Loupe feature on the Plan Tab.
It is important to note that Rest periods are predicated on the On Duty/Off Duty fields (and not the FDP fields). By filling out your Off/On Duty times for the day LogTen will automatically calculate your Rest Before Duty and use this time on the New LogTen timeline showing if you have legal rest.