I'm a free standard user of ServiceDesk Plus. Tool I love and recommend to everyone related to ITSM.

I just created a new instance in a ServiceDesk Plus v11 and I tried to apply a free standard license. How this works?

I can't have 2 free standard licenses in the same ServiceDesk Plus installation? 

I could install 2 SDP in the same server, I just wonder how it works. Do I need a ESM license? is it for free too? I'm freelancer so I don't have more technicians and probably i will never have them.