To mass publish or unpublish cards from a card set, follow these steps:
1. Point to the card set that contains the cards you need to delete and click Edit Set(1).
2. Click one of the cards you want, press and hold the SHIFT or CTRL/CMD key and select the rest (2).
3. On the right-hand panel, click the Show/Hide button (3). If the selected cards were published, they are now hidden. If they were hidden, they are now published.
Note: When your selection includes both published and unpublished cards, the status of the majority of cards is prioritized (e.g., if most cards are published, all the selected cards will be hidden). When the selection includes the same number of published and unpublished cards, they will all be set as unpublished.