Turn on voice mail notices in notification settings.

@deborahahayward I assume that is a question about how to turn notifications on. Try this from Samsung:

/// if you use Visual Voicemail

Swipe down top shade, tap on gear Settings icon upper right

* Tap on Notifications
* Tap More, then tap on Most Recent drop-down and tap on All
* Scroll down and tap on Visual Voicemail

Be sure it's On
Tap on Notification categories
Be sure all are On

Tap left arrow twice to get back to Apps list
//// Done with visual voicemail

* Scroll back and tap on Phone
* Tap on Notification categories
* Tap on Voicemail

Be sure all are turned On

Use the User Manual page 30 to tell you all about the Notification Panel.