Sec. 7. The forms of action for:
(1) dissolution of marriage;
(2) annulment;
(3) separation;
(4) child support; or
(5) paternity;
that are available to the parties under statute are the forms of action in any domestic relations court established under this chapter. However, the caption of the cause must show that the cause is filed in the Domestic Relations Court of _____________ County.