As a tenant’s administrator, if you install Zendesk you configure the following properties to allow Challo to access your organization’s Zendesk account:

Your zendesk subdomainThe subdomain to identify your Zendesk account.
For example, provide: subdomain if your full domain is:
API tokenGenerate a Zendesk API token for Challo to access your Zendesk account.
See: Zendesk Support—Generating a new API token
API user emailThe email address Challo uses to perform API calls.