When family group members die, become incapacitated, or no longer use FamilySearch, they remain in the group until an administrator removes them. They are not automatically removed from the group.
If the deceased are listed in a family group tree, their record remains visible only to the family group until a group member adds death information to it. At that time, that Family Tree profile moves into the public section of the tree. All of the information, including sources and memories, become potentially visible to all FamilySearch users.
When a member of the Church of Jesus Christ of Latter-day Saints has a withdrawal of membership, their FamilySearch account changes to a public (nonmember) account. The user stays in the family group and continues to receive group messages. The user also remains in the family group tree if the group has one. The only change is that the user can no longer access the family names list.
If a person who shared ordinances with a group dies, the reservations shared to the group will remain shared to the group until they expire or someone completes them. These ordinances can be released if someone requests a release of reservations, and they would be subject to the 110-year approval process.
If your group has no remaining administrators, please contact FamilySearch Support.
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How do I give administration rights in a family group?
How do I leave a family group?
How do I remove someone from a family group?
A person who reserved ordinances has died, is incapacitated, or had a withdrawal of membership