diff --git a/install_nextcloud.sh b/install_nextcloud.sh
index 35e8da4..8ecb872 100755
--- a/install_nextcloud.sh
+++ b/install_nextcloud.sh
@@ -4074,6 +4074,142 @@ EOF
 fi # if $REDIS_SERVICE_INSTALLED
 
 
+# - Adjust 'default_language'
+# -
+_parameter="default_language"
+_value="de"
+_type="string"
+echo "" >> $log_file
+echo "# - Adjust configuration parameter '$_parameter'" >> $log_file
+echo "# -" >> $log_file
+echononl "Adjust configuration parameter '$_parameter'.."
+
+cat <<EOF >> $log_file
+sudo -u "$HTTP_USER" "$php_binary" "${INSTALL_DIR}/occ" config:system:set "$_parameter" \\
+   --value="https://${_value}" --type="${_type}"
+EOF
+sudo -u "$HTTP_USER" "$php_binary" "${INSTALL_DIR}/occ" config:system:set "$_parameter" \
+   --value="${_value}" --type="${_type}" >> $log_file 2>&1
+
+if [[ $? -eq 0 ]]; then
+   echo_ok
+else
+   echo_failed
+   error "For more informations see log output at '$log_file'."
+
+   echononl "continue anyway [yes/no]: "
+   read OK
+   OK="$(echo "$OK" | tr '[:upper:]' '[:lower:]')"
+   while [[ "$OK" != "yes" ]] && [[  "$OK" != "no" ]] ; do
+      echononl "Wrong entry! - repeat [yes/no]: "
+      read OK
+   done
+   [[ $OK = "yes" ]] || fatal "Interrupted ny user."
+fi
+
+
+# - Adjust 'default_locale'
+# -
+_parameter="default_locale"
+_value="de_DE"
+_type="string"
+echo "" >> $log_file
+echo "# - Adjust configuration parameter '$_parameter'" >> $log_file
+echo "# -" >> $log_file
+echononl "Adjust configuration parameter '$_parameter'.."
+
+cat <<EOF >> $log_file
+sudo -u "$HTTP_USER" "$php_binary" "${INSTALL_DIR}/occ" config:system:set "$_parameter" \\
+   --value="${_value}" --type="${_type}"
+EOF
+sudo -u "$HTTP_USER" "$php_binary" "${INSTALL_DIR}/occ" config:system:set "$_parameter" \
+   --value="${_value}" --type="${_type}" >> $log_file 2>&1
+
+if [[ $? -eq 0 ]]; then
+   echo_ok
+else
+   echo_failed
+   error "For more informations see log output at '$log_file'."
+
+   echononl "continue anyway [yes/no]: "
+   read OK
+   OK="$(echo "$OK" | tr '[:upper:]' '[:lower:]')"
+   while [[ "$OK" != "yes" ]] && [[  "$OK" != "no" ]] ; do
+      echononl "Wrong entry! - repeat [yes/no]: "
+      read OK
+   done
+   [[ $OK = "yes" ]] || fatal "Interrupted ny user."
+fi
+
+
+# - Adjust 'default_phone_region'
+# -
+_parameter="default_phone_region"
+_value="DE"
+_type="string"
+echo "" >> $log_file
+echo "# - Adjust configuration parameter '$_parameter'" >> $log_file
+echo "# -" >> $log_file
+echononl "Adjust configuration parameter '$_parameter'.."
+
+cat <<EOF >> $log_file
+sudo -u "$HTTP_USER" "$php_binary" "${INSTALL_DIR}/occ" config:system:set "$_parameter" \\
+   --value="${_value}" --type="${_type}"
+EOF
+sudo -u "$HTTP_USER" "$php_binary" "${INSTALL_DIR}/occ" config:system:set "$_parameter" \
+   --value="${_value}" --type="${_type}" >> $log_file 2>&1
+
+if [[ $? -eq 0 ]]; then
+   echo_ok
+else
+   echo_failed
+   error "For more informations see log output at '$log_file'."
+
+   echononl "continue anyway [yes/no]: "
+   read OK
+   OK="$(echo "$OK" | tr '[:upper:]' '[:lower:]')"
+   while [[ "$OK" != "yes" ]] && [[  "$OK" != "no" ]] ; do
+      echononl "Wrong entry! - repeat [yes/no]: "
+      read OK
+   done
+   [[ $OK = "yes" ]] || fatal "Interrupted ny user."
+fi
+
+
+# - Adjust 'activity_expire_days'
+# -
+_parameter="activity_expire_days"
+_value=92
+_type="integer"
+echo "" >> $log_file
+echo "# - Adjust configuration parameter '$_parameter'" >> $log_file
+echo "# -" >> $log_file
+echononl "Adjust configuration parameter '$_parameter'.."
+
+cat <<EOF >> $log_file
+sudo -u "$HTTP_USER" "$php_binary" "${INSTALL_DIR}/occ" config:system:set "$_parameter" \\
+   --value="${_value}" --type="${_type}"
+EOF
+sudo -u "$HTTP_USER" "$php_binary" "${INSTALL_DIR}/occ" config:system:set "$_parameter" \
+   --value="${_value}" --type="${_type}" >> $log_file 2>&1
+
+if [[ $? -eq 0 ]]; then
+   echo_ok
+else
+   echo_failed
+   error "For more informations see log output at '$log_file'."
+
+   echononl "continue anyway [yes/no]: "
+   read OK
+   OK="$(echo "$OK" | tr '[:upper:]' '[:lower:]')"
+   while [[ "$OK" != "yes" ]] && [[  "$OK" != "no" ]] ; do
+      echononl "Wrong entry! - repeat [yes/no]: "
+      read OK
+   done
+   [[ $OK = "yes" ]] || fatal "Interrupted ny user."
+fi
+
+
 blank_line
 
 
@@ -5363,7 +5499,7 @@ blank_line
  #     read OK
  ##  done
  #  [[ $OK = "yes" ]] || fatal "Interrupted ny user."
-fi##
+##
 #
 #echo "" >> $log_file
 #echo "# -" >> $log_file