Where is the Auto Macro Recorder?

You could find it on the top Menu Bar, with text "Auto".

How to record?

Press Ctrl+Alt+Cmd+R, then input a filename, after that, all your operation will be save into that file

How to replay?

Press Ctrl+Alt+Cmd+P, then choose the file you just recorded to play.

What's the difference with Apple's Automator?

Auto Macro Recorder replay every step you did, Automator only shows the last result.