Clarification needed in note detail 1261814.1

Hi all,
With the reference of subject note; below info is available under the section 'How does a PO get a status of Finally Closed':

Question: How does a purchase order get a status of Finally Closed?

Answer: There are two methods to finally close a Purchase Order:

• By checking the Final Close option when matching an Invoice to the Purchase Order in the Accounts Payable Application.
• By choosing the Final Close option under Tools/Control in the toolbar while in the Purchase Order Summary form in the Oracle Purchasing Application.

Please guide the way of doing 1st option of the above answer; as I am unable to find said option on match window. Application Version is R12.1.2