Except as otherwise provided in this chapter, a responding tribunal of this State shall:
1. Procedural and substantive law; powers and remedies. Apply the procedural and substantive law generally applicable to similar proceedings originating in this State and may exercise all powers and provide all remedies available in those proceedings; and
2. Determine duty and amount of support. Determine the duty of support and the amount payable in accordance with the law and support guidelines of this State.