Adding true reminders

The Reminder template seems inadequate for what we’re trying to achieve.

I understand the system allows for scheduled checks with rules on tables, e.g., “date field is today > do something”, but this doesn’t allow for reminders at lesser intervals (30m, 1hr, 6hrs etc.)

My users want to add a record and attach a reminder to that record so that they get notified, particularly on time-critical events.

It seems like what I need can be handled by this suggestion.

In that a reminders table can have entities with a datetime, and this can trigger a notification when that time passes.

Is there any way to do what I’m asking for within the constraints of the current implementation?

Not at the moment.