Each loved one should have one shared story in your family space, built together by everyone who wants to contribute. Separate stories for the same person can't be merged later.
Before you add someone, check your family space to see whether a relative has already started their story. If they have, add your perspective to that one instead.
Belong to more than one family (for example, your side and your partner's side)? Each family space has its own stories. See Being in more than one family.