A chapel in Minnesota requested a feature that we think is grand... they have hours where three, four, or even five adorers are signed up for the same time.
So, if one of those adorers can't make their commitment, it would make sense for them to contact one of their companion adorers to see if they'll be there when they can't.
If so, then there's no need to request a substitute.
Please watch this 3-minute video to see how it works.