Well, these are amounts that, in a way, have been through the court in the first place. These are amounts owing to other people. So take for example a restitution order that a victim is awarded. The victim could enter that order in a civil court and that would be a judgment they could execute against. So if the offender or anybody else.... They would have that court order, they could execute against it, and they could ask the sheriff to seize assets, seize bank accounts, garnish wages, use a variety of civil remedies to enforce that order.
This is just a bit of a shortcut, perhaps you could call it, so that they wouldn't have to do that. The crown would pay that to them and it would satisfy that order and they wouldn't then have to find the bank account belonging to the offender, wherever it's going, and seize the money that way.