Using the Metadata Table view you can apply filters using the standard filtering tools shown at the top of the view as well as by using special metadata filtering in the Additional Filtering shown at the bottom. Using the special metadata filtering option Show only Unassociated Rows, you can filter the rows visible in the Metadata Table view so only the rows to which no data elements are associated are shown. If desired, these rows could then be used to launch one of the tools for associating data, described in Associating data elements with metadata.
This filter can be cancelled by clicking on the Additional Filtering button again and clicking on the Show only Unassociated Rows again. When the filter is active, it has a checkmark beside it. When it is inactive, it does not.
This filter can take a long time if many rows are shown in the table. When working with many rows, it can help if the full table is filtered using the general filters in advance, using the standard filters at the top of the table view. Alternatively you can pre-select some rows and filtering with the Additional filtering option Filter to Selected Rows. This filter can be applied multiple times. If the search takes too long, you can cancel it by unselecting the filter from the menu.
This filter can be cancelled by clicking on the Additional Filtering button again and clicking on the Clear Selection Filter option.