1. Log into cPanel and navigate to Security > SSL/TLS Manager > Manage SSL Sites.
   
   
2. From the Domain dropdown, choose the domain for your certificate, then click Autofill by Domain
   
   
3. Copy and paste in your Certificate: (CRT) (including the BEGIN and END lines), replacing what's already in the Certificate: (CRT) field.
   
   
4. Paste in your Private Key: (KEY) (including the BEGIN and END lines). Leave this as it is.
   
   
5. Paste in your Certificate Authority Bundle: (CABUNDLE) (including the BEGIN and END lines). This is often called the Intermediate Certificate. Copy and paste your new Intermediate Certificate or Certificate Authority Bundle: (CABUNDLE) (including the BEGIN and END lines), replacing what's already in that field.
   
   
6. Click Install Certificate.