Laptops often have multiple uses for the F-keys at the top row of the keyboard, assigning to them numerous functions for volume (increase, decrease, or mute), forward or rewind, toggling Wi-Fi on or off, etc.
In TaxSlayer Pro, if you are at a menu that offers you the ability to press the F10 key to make entries into a supporting statement menu, but pressing F10 doesn't bring up that menu, press and hold the Fn (or Function) key on the bottom row of the keyboard, then press F10.