Tagging Convert with ft. Artist

On mp3tag convert %title% - %artist%
But I want to add the ft. artist as well... Is there a way you can do this??? Please let me know... I hope all is going well... DJ68 Harlem Globetrotter

Which convert function do you use?
Where do you see

and where should it be?
In general: the forums search function should show numerous threads dealing with a featured artist, e.g.