A family of Microsoft relational database management systems designed for ease of use.
That's correct, an Action query cannot be used as a RowSource. Who said anything about doing that. So you did something that was not in my instructions.
The Append query is saved as a named query. I would name it qryAppProgress. Are you sure you added a command button and not a combobox? They are not the same. The command button control is a small rectangle with xxx on it. If the Command button wizard starts when you place the Command button, then cancel it. That will leave the Command button for you to enter the properties.
As I said the Caption property should read Add Progress Records. Then go to the Events tabl and click the ellipses next to the On Click event. You will be prompted to select Code Builder. This will open the Visual Basic Environment (VBE) where you can enter code.
The code to enter is what I gave you. Again, RowSource doesn't come into it at all.