How to add an SSL certificate to ISPMANAGER 5?

Question

ISPmanager

I did not find information on the Internet. There is a manul, but there for the old version and some things do not fit.
I am asked to fill in 3 fields.

These are the fields:

• SSL certificate
  
• SSL certificate key
  
• SSL certificate chain
  

In a letter from Reg.ru where I bought SSL, there are 3 blocks with keys, called like this:

• SSL certificate
  
• Root Certificate
  
• Intermediate certificate
  

There is a description about the chain of certificates - “Chain of certificates” - in the field you must first insert the intermediate certificate, and then the root. Please note: one follows the other on a new line without spaces.
But I don’t understand what an SSL certificate and the Key of an SSL certificate are, inserting different options has not yet led to a result. Who configured this, please tell me (=

Answer 1

Everything turned out to be easier. The SSL certificate key must be generated, it does not come to the mail. I didn't have enough of him.
I regenerated the certificate, I'm waiting for the key. I think it will become clearer.
BUT! Another question has come up.
I have 2 VDS,
for 1 vds the qqqq.com domain for which an ssl certificate
for 2 vds was purchased was transferred from 1 api.qqqq.com domain by changing the A record to 1v vds. where the domain is attached.
How to make ssl also work on 2 vds with api.qqqq.com?