Just FYI, it will only enter the selected number in call routes once, so if you add it multiple times it will only appear once. Also, if you enter it more than once and it has a different option, it will change that option to the latest choice. For example, if you enter it as 'busy signal' the first time and you re-add later with the 'voicemail' option. the number will only listed in call routes as voicemail, the 'busy signal' option will be removed.