If your child is younger than 5 year old:
option 1 --one goes to work, one stay home taking care of kid.
option 2 --both go to work. The kid goes to daycare.
If your child is over 5 years old:
option 1 --one full time working; another one part time working and be able to look after the kid after school.
option 2 --both work full timely. The kid goes to school and is enrolled in afterschool program or have someone babysit him or her after school.