To export a Word index of any folder on Opus 2 right-click on the folder and select Index (.docx) under the Export section.
The index will include any columns that you have currently visible in your document view. To add or remove columns from the index left-click on the View icon and use the tick boxes to choose which columns should be visible before exporting the index.
It is also possible to export an index in Excel format. To do this, you again right-click on the folder you want the index for and select Index (.xlsx) under the Export section.