Sometimes you might find that you want a certain adbar to be displayed more often than other adbars. It's fairly simple to set up AMS to do this, and give the adbar either double the weight it had than before, or triple the weight.
Double-Weighting An Adbar
Say you have two advertisements running on the main page of your site, and you want the first adbar (we'll call it "sample_ad.gif" in this example) to be displayed more often than the second. First, create a new Group using the AMS administration panel. Select the "sample_ad.gif" adbar as the only member of the group, and create the group. Once that's done, select the Relation that is controlling the two adbars on the main page. The two adbars in the advertiser list should already be selected, and now you can also select the new group that you just created. After you make those changes, the AMS will randomly pick from the two adbars in the advertiser list and that new group. Before you double-weighted the adbar, there would have been a 50% chance that the first adbar was displayed (since there are only two different adbars in our example) Now, there is a 66% chance.
Triple-Weighting An Adbar
Triple-weighting an adbar is basically the same process shown in the above example. Now we'll just need to create a second new Group with the "sample_ad.gif" adbar as the only member. Then, in our Relation, we'll select both of the adbars in the "advertiser list", and both of our groups in the "groups list" that contain "sample_ad.gif". The AMS will now be picking from one of four entries, giving the first adbar a 75% chance of being displayed.
