Which technique for dragging and inserting a column of cells displays a dialog box asking you how you want the cells shifted?

The technique you're referring to is called "Insert Cut Cells" in Microsoft Excel. Here's a step-by-step guide on how to use it:

1. Select the column of cells you want to move. You can do this by clicking on the lettered header of the column.

2. Right-click on the selected column and choose "Cut" from the drop-down menu. Alternatively, you can use the keyboard shortcut Ctrl+X.

3. Next, select the column where you want to insert the cut cells. Remember, this will be the new location of the cut column.

4. Right-click on the selected column and choose "Insert Cut Cells" from the drop-down menu.

5. A dialog box will appear asking you how you want the cells shifted. You can choose to shift cells right or down, or you can choose to overwrite existing cells.

6. Click "OK" to confirm your choice. The cut column will be inserted into the selected location, and the cells will be shifted according to your choice.