HestiaCP login page with SSL on multiple domains

Hi there! I would like to merge multiple HestiaCP panels on my VPS. I want to set it up so that users can log in with their existing credentials (URL addresses), but I was only able to set up SSL for one domain on port 8083. Is it possible to set up SSL for multiple domain names?
Thanks for your help.

It is currently not supported

To accomplish this, could it be done with a minor tweak in the ngnx templates?

Yes but then it runs on port 80/443

You need to implement SNI for it …