Unloading instruments

When I freeze a vi it asks to ‘Unload Instrument When Frozen’.

Pressing the ‘Activate’ button doesn’t unload the synth right?

If not how do I unload the instrument without freezing, like after mixing down tracks?

only way is to do it via the instrument rack where you can turn it off (F11)

That’s what I meant by the Activate button ( F11)
but that doesn’t unload the synth like it does in freezing, right?