Yes, if it’s as you say then you would have to type something like %artist%/%track%-%title%. However as you type the program will be showing (in the very same dialog window) a preview of how the tags will be extracted. You can also hit the ‘Preview’ button and it will show you how the extraction will be performed for all the selected songs.
If you are not seeing anything in the preview, you may have been doing some mistake or not completing something (i.e., if you type ‘%artist%/%title’ nothing will appear until you type the closing ‘%’). Also, be aware of spaces: if you type ‘%track% - %title%’ and your filenames do not have spaces around the ‘-’, the extraction will not be correct.