If you’ve ever customized the AutoCAD user interface using the Customize User Interface dialog box, you’ve probably experienced the ultrafast scrolling list, which makes it tough to drag and drop from the command list onto a UI element. For example, try expanding the Modify toolbar node in the Customizations in All CUI Files pane and then drag the Rename command from the command list up to the Modify toolbar node. As soon as your cursor passes from the Command List pane to the Customizations in All CUI Files pane, the pane automatically begins scrolling to the bottom of the list. You have to push the cursor above the top of the Customizations in All CUI Files pane to make it scroll back up.
Fortunately there are some tricks to make this task a little easier. You can use the right-click menu to Copy the command from the Command list and Paste it under the Modify node. Or, if you *really* want to drag and drop, you can “sneak up” on the toolbar (or other UI element) by approaching it from the side.
Thanks to my coworker, Bud, for this handy tip!