IT:AD:NameCheap:HowTo:Purchase and Activate an SSL Cert
Summary
You can use an online tool to generate the CSR and Private Key. * https://decoder.link/csr_generator
When the generation is completed, you'll have both the Private Key, and a CSR.
The CSR is what you will be uploading to the remote to namecheap, while you keep the Private Key secure on your own server.
Fill in the fields.
You'll be asked for a DVC method. Choose HTTP.