Within an A/B set, you add the different variants just as you would create a regular element, with the difference that each variant is grouped under the same set, as seen in existing sets that each contain multiple elements per campaign group (for example, six variants within “Product Promotions – General”).
Sturely then automatically distributes traffic across the variants within the linked campaign, ensuring that each variant receives a representative share of impressions.
Make sure that each variant within the set uses exactly the same format and position link, so that the comparison is fair and the results reflect only the effect of the content change, not technical differences such as varying dimensions.