Please, go to "Quick Adsense" -> "Monetization with vi stories" tab.

Click "Log In" button (if you haven't signed up yet, click "Sign Up") and use vi credentials:

Click "Configure vi Code" button:

Configure "vi stories" ad unit, select a relevant category:

Go to "Settings" tab and assign a position (Beginning of Post or Middle of Post):

Please, note, that only one vi ad unit is allowed per page.

Click "Save Changes" and check if ads show up on your posts/pages. Please, see an ad example here: 

http://demo.vi.ai/ViewsterBlog_Nintendo.html

After putting vi stories on the website, please, check if you've added us to the yourdomain.com/ads.txt file: https://videointelligence.freshdesk.com/support/solutions/articles/35000061362-how-to-add-ads-txt-