Where is the "Change Icon" menu option for Menus?

There are no differencies bewteen standalone and embedded versions. Hold down the CTRL+SHIFT key and right-click. The menu will be default with all settings.

Or open the TLB Settings->Context menu and set the default context menu.

Also note....while continuing to explore TLB yesterday, I was able to add a shortcut for "Recent Items"--it displays in my menu list. But I can no longer find the object when clicking the "+" icon in the menu window. (running 4.4)

Create new menu, and select the "Recent Items" from the predefined list.