It's designed for automatic, unattended recording, therefore there's no much use for manual Rec/Stop buttons (but those will be added as an option in the next update).
Archived records are deleted automatically - there's an option in settings "Store records XX days", you just set how many days you want to keep the records. Program will delete old records automatically.
"Set and forget" - that's the main principle. Program does all the routine stuff, and you always have the most recent recordings.