The Transfer Arguments dialog box comes up when you choose a Transfer item that contains a $PROMPT transfer macro in its command line.

You can change or add to the parameter string before executing the Transfer item.

The position of the $PROMPT macro in the command line determines what you see in the Arguments input box.

Anything preceding the $PROMPT macro is treated as a constant and therefore won't be visible.

If you want to change a constant item, choose the Edit button in the Options│Transfer dialog box.