If you need to create a simple data filter, use the Original Filter Builder in Bill Analyst. This filter uses AND/OR operators and is limited to 20 comparison rows. (If you need more detail, you can create an advanced filter that uses ALL/ANY combinations, searchable strings, and up to 50 rows of criteria using the Condition Builder tool.)
New filters appear on the filter page (you may need to scroll down to see them). If you've shared a filter, there will be a notation in the shared column. You can also create (add) filters via the summary and detail tabs.