How to enable initial-setup without any preconfigured values after installation in Red Hat Enterprise Linux 7

Issue

• We want to enable initial-setup again after installation.
• We ran the following command to enable it.

# systemctl enable initial-setup-graphical.service

• After reboot, initial-setup started properly, but it included some pre-configured values like IP address, hostname, and so on.
• We have a step to be done like this.
  • Install Red Hat Enterprise Linux 7
  • Configire the static network information in the initial-setup in the first boot on our environment.
  • Do some tasks on that, and enable the initial-setup again.
  • In another environment, power on the hardware, and initial-setup starts without any pre-configured values like the static IP address and hostname.
• How can I realize that?