It is possible to create an exact duplicate of any item within a design by following the below steps.
1. Select the item desired to be duplicated.
2. Once selected simultaneously click on the Duplicate button found within the Home menu of the ribbon.
Please note, pressing the CTRL and D (CTRL+D) buttons on the keyboard simultaneously act as a keyboard action shortcut for duplicating selected items.
The new duplicated item will appear within the design at the position of the 2020 Fusion cursor.
For the complete list of keyboard shortcuts visit the below article.
Menu Keyboard Shortcuts in 2020 Fusion