Delaware law requires a CEO and a Secretary for every corporation, as well as at least one Director for the Board of Directors. On a different note, you have to have someone govern the Company. The Board of Directors does this by passing resolutions authorizing the Company, and specifically, the Officers of a company to take certain actions. The officers then sign agreements, contracts, etc. on behalf of the company. It may all seem a bit silly when a company only has a few people in it, but as your company grows, you will be thankful that there are people fulfilling all these different roles.