Here you can configure the content of the field "User address: E-mail address #1" (see File | Options | General | User info)
Registry Hive | HKEY_LOCAL_MACHINE or HKEY_CURRENT_USER |
Registry Path | SOFTWARE\Policies\SoftMaker\SoftMaker Office 2018 |
Value Name | UserDataEmail2 |
Value Type | REG_SZ |
Default Value |