(1) Eligible clients shall receive authorized services on a priority basis, with highest priorities receiving services first.
(2) Priority for receipt of authorized services shall be:
(a) Clients already receiving authorized service as long as their condition indicates services are needed.
(b) Clients who are to be placed immediately in an institution if needed authorized services are not provided.
(c) Clients who are probably to be placed in an institution if needed authorized services are not provided.