The tutorial directed by Mamounette will teach you how to put a voiceover on your movie.

Finally! Your editing is finished, you have spent long hours to choose the best sequences, searching patiently for the music to accompany it, make a superb introduction and finally create a generic end worthy of the name, but it still lacks something.
Oh yes! "Comments".

[Using the tool voiceovers in Studio]

Thanks to The Papy and LooseCannon for the translation (french to english)