For each of the greetings you want to be recorded, write your script. You can write different scripts for the main greeting and for the different extensions i.e. the voicemail greeting, the transfer message and the name. You can save the script and add it to the order after completing each script. Once you have completed all your scripts, you can check out to complete your order and at this stage, you will be charged for your order.
Writing a script doesn’t mean you have to write a speech. A simple greeting is fine, like this sample voicemail message:

2. Hi, you’ve reached [your name]’s voicemail box. I can’t come to the phone right now, but if you leave your contact information I’ll get back to you within 24 hours.
A quick web search reveals a number of business options for transcribing voicemail message audio into a text format. Many service providers offer such transcription capability as part of the overall phone service plans they sell, allowing their business customers to have company-wide access to text-based voicemail without being forced to seek a third party for that functionality.