(a) Scope.--This part provides for the following proceedings:
(1) Establishment of an order for spousal support or child support.
(2) Registration of an order for spousal support or child support of another county for enforcement or modification pursuant to Chapter 84 (relating to enforcement and modification of support order after registration).
(b) Commencement.--An individual petitioner or a support enforcement agency must commence a proceeding authorized under this part by filing a petition or complaint in an initiating tribunal for forwarding to a responding tribunal or by filing a petition or complaint directly in a tribunal of another county which has or can obtain personal jurisdiction over the respondent.