Linked columns: showing a field from a related table — Permissions travel with the route

A linked column can’t become a way around a permission. When you add one, RowFold checks that you may travel every hop and read the field at the end; if you can’t, it says so rather than adding a column that would sit permanently blank. The check is applied again when the view is read, per person — which matters, because a route saved on a shared view is travelled by everyone who opens it, not just whoever added it. A colleague who can’t see the far-end field sees an empty cell there, not somebody else’s data.