W. Va. Code § 48-14-203
(a) The affidavit of accrued support may be filed with the clerk of the circuit court in the county in which the obligee or the obligor resides, in the county where the order originated or where the obligor's source of income is located.
The affidavit may be filed when a payment required by such order has been delinquent, in whole or in part, for a period of fourteen days.
(b) The affidavit shall: