AppBuilder question about workout section countdown & zone alert

AppBuilder seem to be super powerful and useful tool. (THX to the originator :-) Does anybody know how I can do the following two things:

a) get a field with a countdown of the current section of the workout? I use training peaks for workouts, transfer them to the Forerunner 945 and the countdown with the remaining time of the workout section appears automatically on one of the default "run" screen. Is that possible in Appbuilder as well, and if you how? 

b) Is there an option for Zone alerts (e.g. power, or HR, or pace) in structured workouts transferred to my Forerunner 945? How could I implement that? (found only fixed alerts, but not dynamic workout synchronic) 

In any case many thanks for any kind hint.