ANY Library
PCB Doc > Footprint > Properties > Library > Any Library
Schematic Doc > Footprint Manager > Any
DBLIB Library
PCB Doc > Footprint > Properties > Library > DBLib Library
Schematic Doc > Footprint Manager > Use footprint from . . . DBLIB
Tips:
Changing the Library source in the Footprint manager will NOT generate a change in a placed footprint where the footprint names match.
That's it !
