To edit or delete an existing video source, click the Edit icon beside the video source to be edited. 

Make any changes such as uploading a new image and click Save, or click Delete.

Related Articles:

1. Webcasting Plus- Managing the Encoders – Setting the Idle Image
2. Webcasting Plus- Managing the Encoders – Unlocking an Encoder
3. Webcasting Plus- Managing the Encoders – Adding Video Sources