I don't know if this is a thing or not already and I haven't found it but I had two things I was wondering about for Alerts. As far as I know all you can do it set how many times it displays before stopping, but once it starts I can't seem to figure out how to stop it if I want to stop it short of the amount of times I set.
Also something that would be useful would be to be able to set it where it stops after a certain amount of time has gone by.