Smartlist Favorites in Advanced Lookups

Today I learned more about the new Smartlist Favorites in Advanced Lookups feature on GP 2016 R2. Our client and myself in testing couldn't figure out how to make the new Assign To option active. It was always showing as grayed out. In researching I learned it is only available for Smartlists created using Smartlist Designer. It is not available for the default Smartlists. This means if a user would like to use this look-up feature for say the Accounts window they would first need to create a new Smartlist using Smartlist Designer for Accounts then create a favorite and assign it.