How to "Enable Microsoft Office 365 Calendar Integration in Interviews"

Hi team!
Could you please share any deep dive about the integration between ORC and Microsoft Office 365 in Interview, specifically for these fields to populate in "Microsoft Graph Integration"?
*Application ID
*Tenant ID
*Application Password

1) Who is in charge to collect these information? Who should be asked for this information?

2) Then, what about the "Default User Identifier"?

3) Is "All users" the best practice to set the "Access type"?

Thanks in advance for sharing your expertise!
Tommaso