Create Marker

Creates a marker in your stream. Your stream must be live.
A marker is an arbitrary point in a stream that the broadcaster wants to mark; e.g., to easily return to later.
The marker is created at the current timestamp in the live broadcast when the request is processed.

Box Name	Type	Description
Login Name	Dropdown	Your Twitch login name (all lowercase characters)
Description	String	Description of or comments on the marker. Max length is 140 characters.