Follow these steps to open the Windows Settings menu in Windows 10:

1. Press the ‘Windows’ key on the keyboard (located next to the ‘Ctrl’ and ‘Alt’ keys).
2. Select the ‘Settings’ icon (looks like a gear). This will open the Settings Menu.
3. Enter the search term ‘Only use Mouse Keys when Num lock is on’ then select the menu that is returned, be sure to exclude the quotation marks.
4. Change the settings to your desired option(s).
5. When you are finished the close menu.