By default, Hansoft suppresses using the Find function while a report is active, as this can give empty or confusing results.
The Find button or textbox is not available with a report active
Individual reports can, however, be flagged to allow the Find function to be used. In the Report editor, More..>Report settings.
Open the report settings and enable the option to allow Find when the report is active.
When the report is active you can now use Find.