Currently you can manually set the reminder for each calendar entry in your Email-Client. Also for accepted or manually imported LP-Events "ICS".
It would be very helpful that this setting directly will be send out with the ICS File from LP-Events. So participants of an event cannot forget it ;)
These values are usable in ICS.
BEGIN:VALARM
TRIGGER:-PT15M
ACTION:DISPLAY
DESCRIPTION:Reminder
END:VALARM
I think this value can set fix to 15min for each event.
Otherwise it would be great to set this value during creating an event in LP