Greetings!
I received 3 certificate files intermediate1.cer, intermediate2.cer and oporchestra.org_2018.cer
(oporchestra.org is obviously my web site)
I had expected only one file which I proposed to install with my 'key' file in my designated directory.

I do not understand what to do with the three files.
Maybe point me in the right direction.

Have fun,
Paxton

Solved using deprecated SSLCertificateChainFile directive. One directive for each Intermediate file. Was unable to use all files with the single SSLCertificateFile even though I am running Apache2.4.29. Could not find a syntax example.
Paxton