Hi,
Welcome to our forum and thanks for contacting us with your question!
1. It depends on what you mean. The accessibility module allows you to navigate the chart using the keyboard. However, if you want to define your own behaviour based on events, you can do it using appropriate methods. For example, for zoom, you can use the
setExtremes method for an axis. See:
https://api.highcharts.com/class-refere ... etExtremes
2. To redraw a chart, use the redraw method:
https://api.highcharts.com/class-refere ... art#redraw
Demo: https://jsfiddle.net/BlackLabel/gm1zv385/
Let me know if that was what you were looking for!
Best regards