Answered: Just a quick background explanation: The "onclick" event has been replaced by "onClick" in version 8.3.2617: https://javascript.daypilot.org/daypilot-pro-for-javascript-8-3-sp6/ The new onClick event...
Answered: Please note that this example uses a context menu to item to split the event. The context menu is activated on right click (which seems to work fine).