Can I approve new uploads before guests can see them?

Enable "Require approval for new uploads" in the event management section under "Event settings".
While the mode is active, new uploads stay hidden from guests and the slideshow until you approve them. Not yet approved uploads are marked "Pending" — visible to you as a host and to the person who uploaded them.

To approve uploads:
1. Open the upload in the gallery.
2. Click "Approve" (check mark icon, top right) in the media viewer.
Use the "Approval status" filter in the gallery to show only pending or only approved uploads. You can withdraw an approval via "Unapprove" in the media viewer.

If you turn the mode off again, all uploads become visible to everyone immediately.