We have switched from using Google Calendar for our Troop to using Scoutbook. It appears the ics feed from Scoutbook does not include event reminders. So parents that add the troop calendar to their phone are not getting popus before events, even though we have a reminder set in Scoutbook.
Also, could be we get reminders for 30 minutes as an option. 1 hour seems too far from some events such as scout meetings.