No Side chain send.

I’m running Cubase Elements 8 on a IMac and I am relatively new to Cubase.
I can’t work out how to send a track to a Steinberg gate that is inserted on another track. The side chain is selected.
I was expecting the side chain to appear in the list of available sends. It doesn’t, even after restarts.

Am I doing something wrong or is there a problem?
Thanks for any suggestions.

There is no sidechaining in Elements version.

Thanks for the quick reply Grim. It looks like I shall have to upgrade.