Neither the configuration file (player.cfg) nor the connection files (*.nxs) are intended to be edited manually. Even when administrators need to provide their users with pre-configured session files it's strongly suggested they use the graphical interface.
Nevertheless there are still some situations in which administrators may need to modify these files manually either to force some specific behaviors or facilitate their users. In this case it's important to notice that some settings are configured in the nxplayer.cfg file whilst others have to be set in the .nxs files.
The most frequently asked configurations are explained in this guide:https://www.nomachine.com/DT10O00159