Custom events via a hook

Yes, you can use this to inject events:

piecal_events_array_filter

An example of that filter in use is here: https://docs.piecalendar.com/article/66-limit-number-of-events-shown-only-on-specific-pages

One of our users custom built a solution to inject events from a json file using this hook.

Hope that helps.

Thanks!
-Jonathan