Shared Parental Responsibility after Establishment of Paternity; Authorizes parent to request certain determinations & creation of parenting plan & time-sharing schedule; requires determination of parental responsibility & child support & creation of parenting plan & time-sharing schedule to be done through certain action; specifies mother of child born out of wedlock & father who has established paternity of such child are natural guardians of child & subject to rights & responsibilities of being parents; specifies mother of child born out of wedlock is natural guardian if father has not established paternity.