Hi gang,

On all the youtube tutorials I've watched about using a compressor plugin for side chaining, they always direct you to click on the side chain/key input button at the top of your compressor display.

My problem is I don't have one. I have been using audio plugins for about 20 years now, and have NEVER ever, no matter what sort of plugin, what sort of program, what sort of operating system, etc. ever had any options to choose from where I have placed the pink X in the screenshot below like they instruct you to use in the tutorials.

Anyone know why this is? What have I got set up wrong?