Help screen column header Sticky
From Joomla! Documentation
- Pinned. (Yes or No) Whether or not the Banner is "pinned". If one or more Banners in a Category are designated "sticky," they will take priority over Banners that are not sticky.
- For example, if two Banners in a Category are pinned and a third Banner is not pinned, the third Banner will not display if the Banner display module setting is "Pinned, Randomise" or "Pinned, Ordering." Only the two pinned Banners will display. If the pinned banners have a fixed number of impressions, once those impressions are used up, the pinned banners will no longer display, and the non-pinned banners will begin displaying automatically.