Configure the field "User address: Phone number #3"

Here you can configure the content of the field "User address: Phone number #3" (see File | Options | General | User info)

UserDataPhone3

Registry Hive	HKEY_LOCAL_MACHINE or HKEY_CURRENT_USER
Registry Path	SOFTWARE\Policies\SoftMaker\SoftMaker Office 2018
Value Name	UserDataHandy2
Value Type	REG_SZ
Default Value