Guys quick question

I have a great IPTV sub on my firestick and I am really happy with it. Only issue is some movie CHS have that really annoying narrator who describes everything going on!! Grrrrr I rem having the same issue when on the open box and cannot for the life of me remember how I switched it off. Any ideas how to do this through the firestick, it's not the firestick narrator rather the actual individual channel

Thanks in Advance