The Focus tab is great but without the ability to delete custom added items, the “Completed” section gets a little unmanageable. For instance, every new Tape user account comes with 3 reminders placed on the Focus tab for demonstration purposes. There is no way for a user to delete these test items. Once they get marked as complete, they will be in the Completed section forever. If you accidentally add a custom reminder, there is again no way to delete, you just mark as complete and get a blank record in your Completed section forever.
At least when you delete items, they disappear from the Completed section. Would this be possible?
You can delete custom reminders by selecting the title and pressing the delete or backspace key.
One thing, though, is that the reminders you get from an app (with “Show in Focus” activated in the Member field) cannot be deleted. I’m not sure if there is a limit on the number of completed items that will appear in the focus.