How do I enable voicemail for an Extension? You are here: KB Home Portal - Administrator Extensions How do I enable voicemail for an Extension? < Back 1. From the side menu click Extensions2. Edit the extension you want to enable voicemail3. Under general tab, click on Disabled on voicemail field4. From the pop-up click the Disabled toggle to enable voicemail. Then click Update Previous How do I enable call forwarding? Next How do I set up voicemail?