How can I disable the Yellow message on Room70D

[Texas Hare]

We have been using Room70D for video conferencing and document sharing.

When connect to PC through HDMI port without enabling document sharing feature,
As you can see below pics, appeard the yellow message on bottom of document sharing display (right side)
Our customers feels uncomfortable from this yellow message.
Therefore, I'd like to disable this message.

How can I disable this yellow message? ("PC1 (HDMI) 미리 보는 중")

Thank you.

[Wayne DeNardi]

The message is telling you that you are only seeing that content locally and is warning you that your're not sending it to the far end participants.