Bypass Voicemail Greeting/Instructions

1) Can I prevent/eliminate the extraneous instructions at the end of my custom voicemail greeting that goes someting like: "At the tone, please record your message,... you may hang up or press one for more options"

2) How can a caller bypass my voicemail greeting on my Xfinity mobile phone (iPhone 12) to go directly to the beep to leave a message.? For a lot of carriers you used to be able to press "*", "#" or some key like that.