godmothers🤔

Andrea
FTM and not entirely sure on how to assign a godmother/godfather to my baby? 
Does it have to be a church activity? (I'm catholic- I was baptized in the church and would like to baptize my baby through the church as well) 
Can you do it through a court ? Is there a process??
I honestly don't even know what to ask.. 
What did you ladies do in respects to that? If you even chose godparents/ or baptized 
Update: wait, lol I know who'll be the godmother/godfather but how will the system or whatever know if something happens to my husband or I, how would they know where my baby goes ?