[USER=147]@zoldos[/USER] 

You need to setup individual ad locations within XenForo first. This way you will know how many ads locations and possibly the size ads you desire. You will then go into Google Adsense and create individual ad units for these locations. You will then copy the code Adsense gives you for these ad units and paste it back into the "HTML" input for each ad location you created in XenForo.

[URL unfurl="true"]https://xenforo.com/docs/xf2/advertising/[/URL]