Hello,
Thank you for reaching out, and we sincerely apologize for the inconvenience.
Please make sure that you have installed the Helix Ultimate Template Package, not just the Helix Ultimate Framework plugin. Installing only the framework plugin will not add the Helix Ultimate template to System → Site Templates.
If you have already installed the template package and it still does not appear, please check System → Manage → Extensions and ensure that both the Helix Ultimate Framework plugin and the Helix Ultimate template are installed and enabled.
If everything is installed and enabled but the template is still missing, please let us know. We'll be happy to investigate the issue further.