Answer:
The answer to the question: This section of the Constitution is used to?, would be: to establish the Constitutional powers granted to the legislative branch, in the hands of Congress.
Step-by-step explanation:
This portion of the Constitution is in Article I, Section 8, Clause 18, and it is called the Necessary and Proper Clause. This Clause was set by the Committee of Detail at the Constitutional Convention and its purpose was to clearly define the powers, and limitations of said power, of the legislative branch, under the Congress, as given by the Constitution.