var serviceInfo = new ServiceInfo
{
    BaseUrl = "your url",
    BusinessUnit = TcBusinessUnit.MyTcOnline,
    FriendlyNameEn = "My Service En",
    FriendlyNameFr = "My Service Fr",
    Groups = new List<ServiceGroup>(),
    Icon = "icon.jpg",
    IsDisplayableInCatalog = true,
    IsEnrollmentRequired = true,
    IsPublic = true,
    Id = 100 //Only when updating
};
            
var info = await onboardingServiceManager.Register(serviceInfo);