Sorry...I thought you said you had a Rooster and now another young one is a Cockerel? Oh don't worry if you only have the one. Just make sure he remains respectful towards you.
Keep an eye on the Cockerel with the Rooster. The Rooster might one day decide to dispatch him. Or they might get along fine?
Roosters will protect the Hens and Chicks. He will tidbit to feed them. It's really cute watching a Rooster care for chicks.