‘promoter as may be his own agent’

Article in student accountant says and I quote “one or more persons must subscribe their name to a memorandum of association”,and it says “Act allows a single person to form any type of company , either public or private”.
Promoters are people who undertake to form the company and who take necessary steps to form the company. Considering that a person acting purely in professional capacity cannot be a promoter , so , it is a member who forms a company and is a promoter when he instructs a person, acting purely in professional capacity to form a company.
Considering all the above details I am interested in knowing whose agent is promoter now , as promoter is the member in above scenario and assuming he is the single member and at the same point in time director of the company. I mean is promoter his own agent?
Please explain