Looking up all glossaries at once
If you want to lookup ALL your glossaries, you can set the option INCREMENTAL SEARCH in menu Options/Preferences/Booth. Set "Search in entire database" on "Always" or on "If no result is found in selected glossary(s)"
If you select "Always", InterpretBank will always look up your entire database. If you select "If no result is found in selected glossary(s)", your entire database will be looked up only if the search in the main glossary (or a set of glossaries) has not produced any result.