No. A tree can be either shareable for deceased ancestors or not. But no living (or assumed living) people in your family tree will ever be shared, regardless of your sharing permissions.
Accessed via cache: false
Can I have different sharing permissions for different ancestors?
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What can I do with information I find from someone else’s tree via Tree Search and tree-to-tree hinting?
Can any Findmypast members search for, view or receive tree-to-tree hints from living members of my tree?