A: Hello,

1) It's not listed there because we relay on the Webhooks by Zapier, thus we don't have the Zapier app.

2) Yes, you can use any webhooks, in the Zapier integration, instead of the Zapier's webhook URL, you can type your custom webhook URL, it can be Integromat URL, whatever. When the meeting will be cancelled, scheduled or rescheduled, Harmonizely will send the data to that URL.

Let me know if you have additional questions. I'm happy to answer them.