I am in the midst of planning/starting to right a story. There will be the main character, and a secondary sub character which will have its own little sub plot, as well as tying in with the main storyline. The idea is, that in his sub plot, he will not mention anything about his involvement with the main part of the storyline. I am wondering how to coordinate the two characters- Written in third person. Different Chapters, a new paragraph? There name at the beginning of a sentence? Its rather confusing me, and I would appreciate your help. Thanks in advance.