Allow Voicemail Greetings Update Without Enabling Call Handling Permission
Currently, after recent updates, users assigned to a custom role must have the “Call Handling” permission enabled to update their voicemail greetings. However, some customers require that agents can update voicemail greetings without having the ability to modify call handling rules, which is not possible under the current setup.
Request is to provide an option or enhancement that allows users to update voicemail greetings independently, without needing the broader “Call Handling” permission, ensuring better role-based access control and user flexibility.

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Justin commented
I can think of lots of reasons why users shouldn't be given access to the Call Handling rules. Being able to update voicemail greetings is basic functionality that should be available without having to open up many more permissions to users.