And that makes sense because it only configures settings that don't need the database running.
->Creating a Service
->Creating/Modifying a my.ini file
->Configuring a Windows Firewall Exception
->Adding the install dir to the path Environment variable
However. You could use mysql.exe command line tool to script this after your instance is up and running:
usefollowing command
mysql.exe -u root -pm117988 -e "GRANT ALL ON *.* TO 'root'@'%' IDENTIFIED BY 'm117988' WITH GRANT OPTION; FLUSH PRIVILEGES;"