Thank you for contacting us.
To publish many items at once (for example pages), go to the pages grid, select the items you want to be published and select Publish
from the More actions
menu which is placed above the grid.
In case the items you want to be published are with the same status, for example Draft,
you can go to the right pane next to the grid and filter pages by Drafts.
Then you can select all items and publish them.
I hope this helps.
All the best,
the Telerik team
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