An entity satisfies the participation requirements for a * GST joint venture, or a proposed GST joint venture, if the entity:
(a) participates in, or intends to participate in, the joint venture; and
(b) is a party to a joint venture agreement with all the other entities participating in, or intending to participate in, the joint venture; and
(c) is * registered; and
(f) accounts on the same basis as all those other participants.