BNB has the feature to include multiple SKUs in a task. This feature used to be useful when a site would release multiple shoes at the same time. Now that sites are more strict on botting we do not recommend including multiple SKUs in a single task.
If there are 2 shoes dropping on the same day we recommend to split up your tasks. You should also split up proxies.
Make sure that none of your accounts even if with a different proxy try to get 2 shoes at the same time as this will get flagged by the site as suspicious behavior.