For information about how to update your outgoing message, forward your desk phone to a cell phone, and check voicemails remotely, reference this Knowledge Base article from the EOU IT Department: https://kb.eou.edu/topic/phone
Feel free to add a personal touch to make your voicemail message fun and interesting. Clients will feel reassured when they know their messages have been received and you will get back to them.

After setting the number on your voicemail, you must also record a personal voicemail greeting. Follow the steps below. Start the Phone app. if you don’t see the numeric keypad, tap “Keypad” at the bottom of the screen. Tap and hold the “1” for about two seconds until the phone automatically calls voicemail. Immediately tap “3” to access voicemail settings. Listen to the options. On most voicemail systems, tap “2” to start the process to record a new greeting. The current personal greeting will play; then tap “2” again to record a new greeting. Say the greeting you want, and tap “#” when you’re done. To save the greeting, tap “1.” The personal voicemail greeting has been set. Hangup the phone. How to setup voicemail using a Visual Voicemail Applications
Assign different functions to each keypad number to direct your customers where they need to go when they enter a specific number on their phone. The menu that you set for after hours also applies to the holiday schedule.