Domains
The Domains tab can be found in Setup > Account > Domains
Altitude domains are subdomains on the altitude-portal.com domain name, for example park-hotel.altitude-portal.com these can be used for demo and setup purposes but are not recommended for live usage.
These domains require no modification of any of your DNS records and are automatically setup.
Custom domains are domains using your own address, for example portal.parkhotel.com. These subdomains are branded and provide more assurances to your guests.
You will need to required your domain host / DNS provide to configure your domain as a CNAME record pointing to custom.altitude-portal.com
e.g. portal.parkhotel.com CNAME custom.altitude-portal.com
You will need to set your portal domain within your portal configuration. Authentication also takes this domain as well and any changes will require Altitude Support to modify any existing domains.