The dashboard in NFS Portal will display up to 2,000 of your most recent document submissions.
Currently, there is not a way to delete documents no longer needed. However, the filters can be used to reduce the list displayed.
If you are submitting some test documents, then we recommend naming the document in such a way that it will easily identify these documents. For example: Start the document name with "Test" and then use the "Does not contain" filter to remove any document names with "Test".