Why did the founders decide to have a meeting?

The Founding Fathers of the United States of America decided to have a meeting in order to discuss who should rule over a newly created nation.

For a week, all of them had been meeting together in the east chamber of the Pennsylvania State House, and their time was not wasted. Forty-three men from eleven states worked their way down the list of proposals that were suggested by the governor of Virginia, Edmund Randolph, and to say that delegates were almost a full strength is an understatement.

They set out to tackle the seventh, having dwelled at a great length on the first six items which focus was on the purpose of a new legislature and its structure.

At the end of the meeting concluded that by being chosen by the National Legislature, a national Executive must be instituted.