If you want to install your own SSL certificate in cpanel account then you have to find 'Generate CSR & Private Key option' option in cpanel.
If you are not able to find it then it means you have to enable this option from WHM server. In WHM you have to enable this or various cpanel feature in "Feature Manager" option.
You have to install SSL feature from cpanel with below steps:
1. Login to cpanel
2. After that find "Generate CSR & Private Key option" in cpanel.
3. Here you have to enter your CSR details.
4. And from this you have to install SSL.
If you are not able to find it then it means you have to enable this option from WHM server. In WHM you have to enable this or various cpanel feature in "Feature Manager" option.
You have to install SSL feature from cpanel with below steps:
1. Login to cpanel
2. After that find "Generate CSR & Private Key option" in cpanel.
3. Here you have to enter your CSR details.
4. And from this you have to install SSL.