(1) Except as otherwise provided in this act, this article applies to all proceedings under this act.
(2) This act provides for the following proceedings:
(a) Establishment of an order for spousal support or child support pursuant to part IV;
(b) Enforcement of a support order and income-withholding order of another state without registration pursuant to part V;
(c) Registration of an order for spousal support or child support of another state for enforcement pursuant to part VI;
(d) Modification of an order for child support or spousal support issued by a tribunal of this state pursuant to ss. 88.2031-88.2061;
(e) Registration of an order for child support of another state for modification pursuant to part VI;
(f) Determination of parentage pursuant to part VII; and
(g) Assertion of jurisdiction over nonresidents pursuant to ss. 88.2011-88.2021.
(3) An individual petitioner or a support enforcement agency may commence a proceeding authorized under this act by filing a petition or a comparable pleading in an initiating tribunal for forwarding to a responding tribunal or by filing a petition or a comparable pleading directly in a tribunal of another state which has or can obtain personal jurisdiction over the respondent.