calendly user id

[yumaheymans]

I want to retrieve the user who has booked a meeting in my calendly based on a new contact (email address) in my CRM.
The issue I am having is that I can't seem to retrieve the calendly user ID based on email address.
1. How can I do this?
2. And what is the definition of 'Calendly User ID'?

 

[Supreme]

Hey @yumaheymans

Please allow us some time, we are currently looking into it.

 

[yumaheymans]

ok let me know

 

[Supreme]

Hey @yumaheymans

Can you please refer to the following screenshot once and try to extract the details?