autoScrollThresholdNumber|String(default: "20%")
Defines the amount of space that is preserved above a newly auto-scrolled incoming message when the user is already near the bottom of the message list. Accepts either a pixel value or a percentage of the visible message list area.
Example
<div id="chat"></div>
<script>
$("#chat").kendoChat({
authorId: "user",
autoScrollThreshold: "25%"
});
</script>