Jupp thats the ticket, you unscrew, lift out and replace with a similar item from a Kiev, and as Murray stated, you now have a double duty instrument, that can handle both Kiev and Minolta casettes.
Usually Kievs come in a little box with one casette, a simulated leather case, camera and an instruction book, telling you how to operate, reload casettes and even develop films (sometimes there are parts for a dev. tank spool also,but not always) only trouble is it doesn't come with a russian to translate that little book! BTW a Kiev is a small quality camera, they hold their own compared to Minoltas IMHO.