get meeting data fro embad

I am a developer in a company that wish to embed calendly  of there customer 
so non caledly user can schedule meeting with them - i have the customer calendly link but not the customer calendly  credentials nor it access token.
i manage to embed there calendar but  so user  can  schedule a meetings  - but i  wish to save in my site the schedule time of the user meetings
i  find  how  to do so   - is there a way ?