Simplify the following text for a Grade 13 native English-speaking person.
Original: Takamoto was Vice-President of Creative Design at Hanna-Barbera , and was responsible for overseeing Hanna-Barbera 's product-related merchandising .
Simplified: Takamoto was Vice-President of Creative Design at Hanna-Barbera , and was responsible for overseeing H-B 's many product related merchandising .