To set the similarity levels of the captured face image and the reference image, do the following:

1. Go to the Interfaces tab in the System Settings dialog box (1).
2. Select the Face recognition and search object in the objects tree (2).
   
3. In the Red zone: field enter the value corresponding to the highest match in terms of percentage (3).
4. In the Yellow zone: field enter the value from interval between the minimum similarity of the identification parameter value (setting for the Face Recognition Server object) and the parameter value for the Red zone (4).
5. In the Minimum similarity for identification: field enter the value of minimum similarity of the captured face and the reference image. Alarm will be generated if the the specified value is exceeded. The Minimum similarity for identification: parameter is expressed in percentage (5).
6. Click Apply to save the changes (6).

Setting similarity levels of captured faces is now complete.