Even though there is no option to edit the chat window header by default, you are able to hide the "Send me a transcript" and/or the "Expand to new window" options using Custom CSS. To do so, navigate to Configuration > Chat > Chat buttons > Edit your chat button.
Hide "Send me a transcript"
In the "Chat window" tab scroll down to the "Custom CSS" section and add the following CSS code:
.TranscriptPanel {
display: none !important;
}
.PopOutButton {
top: 35px !important;
}
Hide "Expand to new window"
In the "Chat window" tab scroll down to the "Custom CSS" section and add the following CSS code:
.PopOutButton {
display: none !important;
}
Hide the settings icon
In the "Chat window" tab scroll down to the "Custom CSS" section and add the following CSS code:
.OptionsButton {
display: none !important;
}
Do not forget to APPLY the CSS code and SAVE the chat window.