Note: The primary phone number cannot be unassigned from the Auto Attendant. To release the main number, you need to swap it with another spare phone number on the account. Released numbers can be later assigned to a user, a Hunt Group, or any other object on the account. Toll-free numbers cannot be used as primary users' numbers.
Hello. You have reached [Insert employee name here] in the [Insert department name here] office at UNI. I will be out of the office from [insert day of the week, month, date] through [insert day of the week, month, date]. Please leave a message and I will return your call on [insert day of the week, month, date]. If you require assistance prior to [month, date], hang up and dial our main departmental number at 273-[insert phone number here]. The main departmental voice mail will be checked daily on Dec. 28, 29, 30 and 31. Return calls will be made if an immediate response is needed.

Next to Message Storage, use the drop-down menu to select where you want to store your messages:
Recording voicemail greetings for your business or personal life requires a separate list of priorities, because they are being used for two distinct purposes and will be heard by two very different types of callers. I have a friend with two cell phones - one for work, and one for personal calls - and if you call both lines, you would never know it's the same person.