Samsung Apps on Custom ROMS?

Is it possible, if so how, to install Samsung apps from stock rom to a custom rom? Specifically, S Calendar from stock (4.4.2) to CM13. The gapps version of calendar does not provide the ability to copy an appointment/task (ie. a Dr appointment has occurred now you get a reschedule).

Would like to be able to carry all the apps using the S Pen (S Note, etc) to CM13, is this possible? To have Cyanogen recognize when the pen is removed and ready to be used?

I hope I conveyed my thoughts....

Thanks in advance