Intune license for custom roles

Hi All,

In Intune, when we assign a custom roles to any support desk agent or second level support engineer, we should assign Intune license to the admin account. recently Microsoft announced that the requirement of license is no needed. the below is the url which is published in What’s new Intune portal. https://docs.microsoft.com/en-us/mem/intune/fundamentals/whats-new#admins-no-longer-require-an-intune-license-to-access-microsoft-endpoint-manager-admin-console

Now I want to know what are things which are to be taken care before enabling the feature in our tenant. As this is non-reversible I want to be more careful before enabling the feature,