Since the load balancer is outside of CAPM, we do not have guidance on configuring this.
If you need assistance, you can contact your account team to arrange for Services, to help out.
As far as https, yes you can use self-signed certs, here is the info:
https://techdocs.broadcom.com/us/en/ca-enterprise-software/it-operations-management/performance-management/3-7/administrating/single-sign-on/set-up-https/enable-performance-center-to-use-ssl-manually/configure-the-port-and-website-for-https.html
..
https://techdocs.broadcom.com/us/en/ca-enterprise-software/it-operations-management/network-flow-analysis/10-0-0/installing/initial-configuration/enable-https-for-ca-network-flow-analysis.html
Please let me know if this answers your questions.
Thanks,
Richard Vernon