How to "Index Again" many assets at a time

Product: Quark Publishing Platform (QPP)

You can select multiple assets by holding the control key and by selecting all assets, right click now and select Index again from the context menu.

Also Ensure that QuarkXPress server is connected with QPP. In order to check the QuarkXPress server connectivity with QPP, please refer URL : http://<SERVER-IP>:61400/qxpsmadmin