Create a new Authentication Service by selecting Designer Studio > Org & Security > Authentication > Create Authentication Service.
Provide information about the service in these fields:
Type - Select one of these options:
Short description - Required. Specify a short description of what the service provides.
Name - Specify a name for this authentication service. Begin the name with a letter, and use only letters, numbers, the ampersand character, and hyphens.
Click Create and open to create the authentication service. Click Cancel to close the form without creating a service.