Protect / lock colors in Harmony Essentials

I cannot figure out how to lock / protect my colors. Is this feature not available in essentials, or am I missing something? From what I have read, it is supposed to be a simple option accessed from right click / drop down menu in the colors window… I appreciate any help!

As far as I know, this feature is only available in Advanced and Premium.
http://docs.toonboom.com/help/harmony-12-2/advanced/ink-paint/protect-colours.html?Highlight=Lock%20colour