Sometimes you're preparing a board, but don't want the item to be visible yet, in other cases, the item becomes irrelevant, but you might still want to use it in the future. For these cases you can turn items online or offline.
All items are created online by default. To change the status of your item you can do it in one of two options:
1. Hover over the item and click the Online/Offline button
2. Edit the item -> Navigate to Visibility tab -> Choose the desired status and save.
Note: When an item is offline it will be grayed out and marked as such in the item view
Note: You can use the filters in the items tab to see online/offline/scheduled/expiring items
Read more about Item scheduling here.