Cubase 4 sidechain?

Just came across this tutorial re sidechaining in C4. Only thing is I see no sign of any sidechain mode at the top of my compressor or any other of the VST3 plugins. I am using 4.5.2
Would appreciate any clarification.

http://audio.tutsplus.com/tutorials/mixing-mastering/how-to-set-up-side-chain-compression-in-cubase-4/

Many thanks in advance.

Read the package, what exactly does it say about the Cubase version you are using…?

Thanks for the reply.
My own stupid fault, I was looking at the three circular buttons in the top bar which don’t appear on my plugins for some reason, and that distracted me from the actual button lower down on the right which now looks painfully obvious.
Never mind, all is well. Thanks again.

I was looking at the three circular buttons in the top bar which don’t appear on my plugins for some reason

The reason is that you´re probably on a PC and not on a Mac…

Absolutely right.