@dejo I don't think this is going to work properly. If I understood correctly your alarm is going to start "alarming" (maybe ringing would be a better term here) after 10 minutes and reset an hour later. I also don't see a way to input or select the desired time for it to ring.
I would also change the stop signal to be the same as the reset (lookup alias) and remove the synchronous stop inside the main process. And the testbench is incomplete since it nevers starts nor its timer is set.