The staff are already being paid to do other tasks. This would be an added responsibility, on top of the current responsibilities of their job role. So that would either take away from those original responsibilities, or add more paid hours to complete the new responsibilities. It could also mean they have to hire new staff, or bring in temporary staff to manage the responsibilities, should the other staff be unable to.
We are getting into the realm of possibility here, since we don't know the full cost or scope.