What's the meaning of Server tab under the dashboard

Hello,
I recently joined a company which uses Hangfire to perform some jobs (in past I used Quartz.Net), I was wondering since I’ve got only 1 installation of hangfire, why I see 4 server, are they just different processes? I got names as PD1SDWK00035B:port with 5 worker each…

Where this parameter is configured? Can I somehow set prioritize some fire and forget jobs so that they can run before the end of others?

Thanks