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--- a/README.md
+++ b/README.md
@@ -68,12 +68,12 @@ The import of a defined list of users can be done based on (./template.ods)[./te
 
 Some information about the columns:
 - `Anrede`: Optional - Salutation / Title.
-- `Vorname`: Firstname.
-- `Nachname`: Lastname.
-- `Externe E-Mail`: External mail address will be set for the self-service e.g. password reset.
-- `Username`: The actual login name for the user.
+- `Vorname`: Mandatory - Firstname.
+- `Nachname`: Mandatory - Lastname.
+- `Externe E-Mail`: Mandatory - External mail address will be set for the self-service e.g. password reset.
+- `Username`: Mandatory - The actual login name for the user.
 - `LDAP-Gruppen`: Optional - Semicolon separated names of LDAP groups the user should be member of. Script can create these groups if they do not pre-exist.
-- `Passwort`: Optional - Is no password is specified a complex random password is generated and the user can reset it using the password reset.
+- `Passwort`: Optional - If no password is specified a complex random password is generated and the user can reset it using the password reset or you can use the `--trigger_invitation_mail` option to let the script trigger that mail during the user creation process.
 - `Organisation`: Optional - The value shows just up as the organization of the user. When no value is specified the maildomain from the "Externe E-Mail" is used.
 - `Primäre Mailadresse`: Optional - When the groupware module isn't being used you can define an external email address that e.g. receives notifications.
   - Enable the auto creation of non existing maildomains with CLI option `--create_maildomain True`.