Follow this guide to set up CNAME in the ISPmanager.
Enter the Domain name section and press the required domain.
For access to the records, press Records in the upper menu:
To add a new record, press Create.
To change the existing record, mark it in the list and press Change.
In the Name field specify your site subdomain, in the Address field – “whitelabel.travelpayouts.com.”.
Note! The address for a CNAME record shall be entered with trailing period.