Complex sentence: Later on children and adults would be recruited to become Headmaster Juniors for both the Autobots and Decepticons but as the story progressed the story focuses more on the Godmasters (released as Powermasters in the West) and they became the more powerful Transformers on the show.
Split into simpler sentences: Later on children and adults would be recruited to become Headmaster Juniors for both the Autobots and Decepticons. But as the story progressed the story focuses more on the Godmasters (Powermasters) and they became the more powerful Transformers on the show.