Automatically add reminders for specific calendars

Hey everybody,

so I have different calendars on my iCloud account. Some for work stuff, others for personal stuff. And one of the is for critical appointments which I musn't forget about and would like to be reminded. Unfortunately it seems that in iCal itself there isn't a feature to add reminders 30 or 60 minutes in advance for only specific calendars but only accounts. But I don't wanna be reminded 60 minutes in advance that I'll be going to a party in 60 minutes. I usually remember 😉

Is there a way to do this with a script that runs in the background and just adds a reminder to all events in the "Appointments" calendar that have none already? Or is there another workaround to do this? Because as I know myself I'll probably forget to add reminders to half of the appointments :/

Thanks in advance 🙂