3rd party plugins sidechain in Cubase?

I recently switched to Cubase from Ableton but everything is not intuitive.
I want to sidechain 3rd party plugin such as Fabfilter Pro Q3, but when I select send on trigger channel, I am not able to send the signal.
Is there any way to send the signal to other plugins that don’t have sidechain button?

I just looked up on youtube and there is sidechain button on 3rd party plugins.
But why I don’t have that? Its fabfilter pro q3 as well.
the only difference is he’s using window.
How do I make sidechain button appear?

You have to use the VST3 version of the plug-in.