Every company starting a new blog or trying to scale and improve an existing one faces these questions: "How many people do we need to keep the blog rolling? And who should these people be?" 

Do you need only a writer — or several writers — to create content? Or do you also need an editor to polish their style and grammar? And what about a content manager to plan and uphold the process?

It appears tricky at first sight, so let's sort some things out.