When adding a new family to an individual from the close relationship tab (is there other way?), the recently added family is not shown, so there is no simple way to proceed to add children to that family.
This confuses my users to no end. I get duplicates, children incorrectly linked, etc.
The new family should be visible on the close relatives tab as a pending change to let them add children, navigate to it to add marriage dates, etc. without waiting for the addition to be approved.