This has been brought up before:
And I’ve brought it up privately on multiple occasions - the UI of the events button in the composer at present trips up even the most technically savvy users.
My workaround solution to this has been to hide the insert/date time button to limit the confusion (and thus lose the quite useful functionality). But people struggle to find the button in the gears menu still.
Yup - this would absolutely nail that particular issue!
The modal needs attention too; when we put together a TC to insert Jitsi calls into events it was much easier to simply modify the Insert date/time modal and use that. It is broken now (as we are no longer using Jitsi) and I can’t even find the code. Will post a link if I find it.