Hi grumpykittycat!
You have the ability to purchase the extension right from your portal, which means we've already given you the permission for the extension. However you are only allowed 2 for the life of the program. That means if you are enrolled in a college level program that has 4 semesters, you only have 2 for the entire 4 semesters. Keep that in mind so you can use them strategically.
To purchase your first extension via your student portal, click on the "My Student Account" tab at the top middle of the screen. Then click on the "Make a Payment" button. Scroll down just a little to the "Payment Amount and Type" section. The extension will be under the "Fees" area, titled "Study Time Extension Fee". You can choose various payment methods, but a debit card or credit card is a faster clearing time on payments made and will be quicker in applying the additional 6 months of study time.
Best of Luck with your remaining studies!!