Please check the implementation of "Personal Space reminders through the use of 'ICS Files'". The selectable timeframes only make sense to a certain extend as they always refer to the start of a respective group's check-in time.

This leads to the following behaviour:

If a group has a check-in period starting at 6 am, the booking reminder would either pop up at (depending on the ICS reminder setting provided in the brackets)

5.45 am (15 minutes)
5.30 am (30 minutes)
5 am (1 hour)
4 am (2 hours)
6 am the day before (24 hours)
6 am two days before (48 hours)

None of these options make much sense to us as our users are either probably not yet at their computers at these times or the reminders are too much ahead of time.

It would be great to have "in-between-times" (e.g. 14/15/16 hours, so that the reminder would pop up at 4/3/2 pm the day before the booking, depending on the check-in period) or even have a possibility to set custom hours (of course within a given period of e.g. 1-48 hours).