What is the test for determining whether a parent is a custodial parent or a non-custodial parent?

ordered to pay child support. We disagree. "[T]he concept of custodial parenthood must be interpreted differently depending upon the context within which it is considered." (County of Ventura v. George (1983) 149 Cal.App.3d 1012, 1018.) In the context of "enforcement of support arrears, it is of no consequence as to whether a parent is a custodial or noncustodial parent." (In re Marriage of LaMoure (2011) 198 Cal.App.4th 807, 827; see id. at pp. 826-828.)

Father obliquely raises numerous additional contentions in his opening brief. To the extent they are discernable, we have considered each of his arguments and have found them to be without any factual and/or legal merit. Under the circumstances, there is no need to address each of these contentions in this opinion. (See Linhart v. Nelson (1976) 18 Cal.3d 641, 645 ["Having examined [appellant's] other contentions, we find them of insufficient merit to warrant discussion."].)