Is there any way i (as admin) can view staff's calendar events where they have chose the private option and locked the title of meetings?
You can ask him to add you as a delegate and tick "can see private items" checkbox.
You can do it by yourself with the Powershell command Add-MailboxFolderPermission. Please note, however, that this may be against the law in certain countries.
@JaksaSkelin Thank you for your help