Use cPanel → Security → SSL/TLS → Private Keys (KEY) when manual key generation is required.
- Open the private-key manager.
- Select the desired supported key type and size where the interface provides those choices.
- Enter a useful description.
- Generate the key.
- Store any required backup securely.
Do not create extra private keys without a reason. For AutoSSL-managed sites, the automated certificate workflow normally handles key provisioning.