Using Filter to fetch specific data in SAP Crystal Reports

I think you need to setup filtering in Record Selection formula. Navigate to this path to open Record Selection Formula:

Report → Selection Formula → Record

This will open a new window where you can pass your condition and rerun the report.

To know more about Record Selection Formula, you can refer this link:

1217147 - Crystal Reports Record Selection Formula change order when modifying it via the Select Expert.

SAP Knowledge Base 1217147