These options are always available:
To create aliases in all of the locations you have chosen, click this button.
To close the window without creating aliases, click this button. Any changes to the list of locations will be discarded if the window is dismissed with the Cancel button.
If the Make Alias window was opened to create aliases for multiple items, the following options are also available:
To create aliases for all items in all of the locations you have chosen, click this button.
To skip the current item and create no alias for it, click this button.