1. Select the files you want to rename2. Right-click on them to bring up the context menu3. Go to "File Operations> Rename to..."4. In the dialog that opens, select the rename pattern you want or input your own5. Click "Run"As far as I know, there is no option/component to alter a tag which would automatically rename the file according to that tag. I don't think you'd find much demand for such a feature even if it were an option.