Use Surface Pen with OneNote and Cortana
First, pair your Surface Pen with your Surface Pro. You can do this manually too. Now, to open Cortana, hold down the top button pen for a second or so, then enter your question. Assuming, you’re signed in on your Surface, click the top of the pen. The action instantly opens up your most recent notes. Write in any of your OneNote notebooks or open a new Quick Note. While you write, your notes are automatically saved to OneNote and synced to your OneDrive so you don’t lose them in an event of misfortune and make it readily accessible from anywhere. When done, press the power button on your Surface to put the screen back to sleep. Double-click on the top button of your Surface Pen lets you capture a screenshot instantly. Just select the part you want to capture in the screenshot by dragging the tip of the pen from one corner of your selection to the opposite corner. As soon as you release the press of the pen tip, your selection appears in a new page in OneNote.
For sending a page or sharing a notebook, select Share OneNote Share Page icon from the upper-right corner as shown in the screenshot below. This option enables you to share a page in OneNote through email or social media. To get a link to a whole notebook that you can paste into an email or file, Select the Menu icon in the upper-left corner to open the list of notebooks.
Then, right-click the notebook you want to share and select Copy Link to Notebook.
This way you can make your Surface Pen work with Cortana and OneNote. Image source: Microsoft.