Grid, Board & Gallery — Edit cells in the grid (2)

Relation cells work differently: double-click one (or click it while it's selected) to open the link picker. It searches the whole related table — type to narrow, scroll for more, and the footer says how many matches are still off screen. Current links show as chips you can remove with ×, ↑↓ and Enter work without the mouse, and typing a name that doesn't exist offers Create “…”. Press Done or click away to save; a field set to Just one saves the moment you pick, replacing the old link. Esc is the one thing that abandons the change. Lookup and rollup cells are computed from linked records and can't be edited directly. Cells that are read-only for your role show a Read-only for your role hint and never open an editor.