Rada in Geni status

Assalaamualaykum to all Muslim Geni users and Curator. I want to ask two topics. How do you relate foster-kinship (parent child) when using Geni? Refer to this topic https://en.m.wikipedia.org/wiki/Rada_(fiqh). All Muslims should know the status of two (or more) children from the same mother (they are considered as biological siblings). Second question, how do you relate (in Geni status) if any culture has their own system of adoption which make certain relationship cannot marry to each other). For example, in Indian culture, two cousins are forbidden to marry the other (considered as incest). Hope any reader may respond.