To set the similarity levels of the detected 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 for 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 detected face and the reference image. Alarm will be generated while exceeding the specified value. The Minimum similarity for identification: parameter is expressed as a percentage (5).
6. Click Apply to save changes (6).

Setting similarity levels of detected faces is now complete.