Newbie Q: create password-protected ZIP and copy?

I'm trying Hazel for the first time and really liking it. I'd like to create a rule that takes a file from my desktop, turns it into a .zip file protected by a password, leaves the original file on my desktop, then moves the zipped copy of the file to an external drive.
And I'd like this rule to run anytime I change and quit the file.
Do I need to create an Automator workflow to do this, or is there some way I can do this just in Hazel?
Thanks much for any advice - and I apologize if this the answer is obvious to anyone who spent more than an hour with Hazel. (I'm still at the 15 minute mark.)
And I'd like this rule to run anytime I change and quit the file.
Do I need to create an Automator workflow to do this, or is there some way I can do this just in Hazel?
Thanks much for any advice - and I apologize if this the answer is obvious to anyone who spent more than an hour with Hazel. (I'm still at the 15 minute mark.)