So if I have 7 Screen Licenses on my Telepresence Server is it enough?
Do I still need Telepresence Conductor to accomplish those Screen License scenario on Telepresence Server? Or those scenario already covered with Telepresence Server only?
You don't need conductor, but you are probably better off if you've got it. For your scenario, you could use the free version of Conductor so long as you have some VM infrastructure to install it on, so you wouldn't have to pay anything.
If you aren't using Conductor, you would want to set your TP server to "HD" mode rather than "Full HD" so you don't use up all your screen licenses.
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.