Invoke excel vba

To invoke Excel VBA (Visual Basic for Applications), you can follow these steps:

1. Open Excel and press `Alt + F11` to open the Visual Basic Editor.
2. In the Project Explorer window, locate the workbook where you want to invoke VBA.
3. Double-click on the sheet or module where you want to write the VBA code.
4. In the code window, write your VBA code to perform the desired actions. For example, you can use the following code to display a message box:

Sub HelloWorld()
    MsgBox "Hello, World!"
End Sub

5. To run the VBA code, you can either click on the "Run" button in the toolbar or press `F5`.
6. The VBA code will be executed, and in this case, a message box with the text "Hello, World!" will be displayed.

Remember to save your workbook with macros enabled as a .xlsm file to preserve the VBA code.