Yes. In either the Model Explorer tree view or on the graphical canvas, select the items you wish to move. Then right-click on one of the selected items. In the menu, choose “Cut” or “Copy” depending on if you want to move the items or duplicate the items. Next, right-click on the target package in the Model Explorer or on the target package’s graphical canvas and select “Paste” to complete the action (either move or duplicate).