Tigervnc server: do I have to start a specific 'instance'?

I am trying to set up a tigervnc server on Pop! OS. When I try to start the server in systemd using sudo systemctl start tigervncserver@ , I get the following error: > Failed to start tigervncserver@.service: Unit name > tigervncserver@.service is missing the instance name. See system logs > and 'systemctl status tigervncserver@.service' for details. This seems to imply that I have to start an instance of the server that is linked to a specific display (i.e. with sudo systemctl start tigervncserver@:1). However, aren't the display numbers linked to individual users? So, isn't that command starting the VNC server for just one specific user? Is there some way to start a 'general' VNC server daemon, that will start VNC sessions for whichever users log in? Sorry, perhaps I'm just confused about how this is supposed to work.